Electrophoretic display panel and manufacturing method thereof

Abstract

An electrophoretic display panel includes a driving substrate and an electrophoretic display substrate. The driving substrate includes a first base material, driving electrode patterns, conductive lines, and a shielding layer. The first base material has a first configuration region and a second configuration region. The driving electrode patterns are located inside the first configuration region. The conductive lines are respectively connected to the driving electrode patterns and respectively extend from the first configuration region to the second configuration region. The shielding layer shields the conductive lines and exposes the driving electrode patterns. The electrophoretic display substrate includes a second base material located opposite to the first base material, an electrode layer, and display media. The electrode layer is disposed on the second base material and between the first and second base materials. The display media are disposed between the electrode layer and the driving electrode patterns.

What is claimed is: 
     
         1 . An electrophoretic display panel comprising:
 a driving substrate comprising:
 a first base material having a first configuration region and a second configuration region surrounding the first configuration region; 
 a plurality of driving electrode patterns disposed on the first base material and located in the first configuration region; 
 a plurality of conductive lines disposed on the first base material, the conductive lines being respectively connected to the driving electrode patterns and respectively extending from the first configuration region to the second configuration region; and 
 a shielding layer disposed on the first base material, the shielding layer shielding the conductive lines and exposing the driving electrode patterns; and 
   an electrophoretic display substrate disposed above the driving substrate, the electrophoretic display substrate comprising:   a second base material located opposite to the first base material;
 an electrode layer disposed on the second base material and located between the first base material and the second base material; and 
 a plurality of display media disposed between the electrode layer and the driving electrode patterns. 
   
     
     
         2 . The electrophoretic display panel as recited in  claim 1 , wherein a material of the shielding layer comprises a photoresist material or an insulating material. 
     
     
         3 . The electrophoretic display panel as recited in  claim 1 , wherein the shielding layer has a plurality of openings, each of the openings respectively exposes a portion of the conductive lines, and the driving electrode patterns are located on the shielding layer and electrically connected to the portions of the conductive lines exposed by the openings through the openings. 
     
     
         4 . The electrophoretic display panel as recited in  claim 1 , wherein each of the display media comprises an electrophoretic liquid, a plurality of black charged particles, and a plurality of white charged particles, and the black charged particles and the white charged particles are distributed into the electrophoretic liquid. 
     
     
         5 . The electrophoretic display panel as recited in  claim 1 , further comprising:
 an adhesive layer disposed between the driving substrate and the electrophoretic display substrate, wherein the electrophoretic display substrate is fixed to the driving substrate through the adhesive layer.   
     
     
         6 . A manufacturing method of an electrophoretic display panel, the manufacturing method comprising:
 providing a first base material, the first base material having a first configuration region and a second configuration region surrounding the first configuration region, wherein a plurality of driving electrode patterns are formed in the first configuration region, and a plurality of conductive lines extending from the first configuration region to the second configuration region are formed on the first base material;   forming a photoresist layer on the first base material, the photoresist layer covering the driving electrode patterns, the conductive lines, and a portion of the first base material;   performing an exposure and development process on the photoresist layer to form a shielding layer shielding the conductive lines, wherein the first base material, the driving electrode patterns, the conductive lines, and the shielding layer together constitute a driving substrate; and   adhering an electrophoretic display substrate onto the driving substrate, the electrophoretic display substrate comprising a second base material, an electrode layer, and a plurality of display media, the second base material being located opposite to the first base material, the electrode layer being disposed on the second base material and located between the second base material and the first base material, the display media being at least disposed between the electrode layer and the driving electrode patterns.   
     
     
         7 . The manufacturing method of the electrophoretic display panel as recited in  claim 6 , wherein the step of forming the driving electrode patterns and the conductive lines comprises:
 forming a conductive material layer in the first configuration region and the second configuration region of the first base material;   forming a first photoresist layer on the conductive material layer, wherein the first photoresist layer covers the conductive material layer;   performing a first exposure and development process on the first photoresist layer to form a first patterned photoresist layer;   etching a portion of the conductive material layer exposed by the first patterned photoresist layer with use of the first patterned photoresist layer as an etching mask, so as to form the driving electrode patterns located in the first configuration region and the conductive lines respectively extending from the first configuration region to the second configuration region; and   removing the first patterned photoresist layer to expose the driving electrode patterns, the conductive lines, and the portion of the first base material.   
     
     
         8 . The manufacturing method of the electrophoretic display panel as recited in claim  6 , wherein a material of the shielding layer is a photoresist material. 
     
     
         9 . The manufacturing method of the electrophoretic display panel as recited in  claim 6 , further comprising:
 forming an insulating material layer before forming the photoresist layer on the first base material, so as to cover the driving electrode patterns, the conductive lines, and the portion of the first base material;   performing the exposure and development process on the photoresist layer to form a patterned photoresist layer;   etching a portion of the insulating material layer exposed by the patterned photoresist layer with use of the patterned photoresist layer as an etching mask, so as to form the shielding layer; and   removing the patterned photoresist layer before adhering the electrophoretic display substrate onto the driving substrate.   
     
     
         10 . The manufacturing method of the electrophoretic display panel as recited in  claim 9 , wherein a material of the shielding layer is an insulating material. 
     
     
         11 . The manufacturing method of the electrophoretic display panel as recited in  claim 6 , wherein a material of the photoresist layer comprises positive-type photoresist or negative-type photoresist. 
     
     
         12 . The manufacturing method of the electrophoretic display panel as recited in  claim 6 , wherein each of the display media comprises an electrophoretic liquid, a plurality of black charged particles, and a plurality of white charged particles, and the black charged particles and the white charged particles are distributed into the electrophoretic liquid. 
     
     
         13 . A manufacturing method of an electrophoretic display panel, the manufacturing method comprising:
 providing a first base material, the first base material having a first configuration region and a second configuration region surrounding the first configuration region, wherein a plurality of conductive lines extending from the first configuration region to the second configuration region are formed on the first base material;   forming a shielding layer on the first base material, wherein the shielding layer covers the first and second configuration regions of the first base material, the shielding layer has a plurality of openings, and each of the openings respectively exposes a portion of the conductive lines;   forming a plurality of driving electrode patterns on the shielding layer, wherein the driving electrode patterns are disposed in the first configuration region and respectively connected to the portion of the conductive lines exposed by the openings through the openings, and the first base material, the driving electrode patterns, the conductive lines, and the shielding layer together constitute a driving substrate; and   adhering an electrophoretic display substrate onto the driving substrate, the electrophoretic display substrate comprising a second base material, an electrode layer, and a plurality of display media, the second base material being located opposite to the first base material, the electrode layer being disposed on the second base material and located between the second base material and the first base material, the display media being at least disposed between the electrode layer and the driving electrode patterns.   
     
     
         14 . The manufacturing method of the electrophoretic display panel as recited in  claim 13 , wherein a method of forming the shielding layer comprises performing a photoresist coating process, an exposure and development process, and an etching process. 
     
     
         15 . The manufacturing method of the electrophoretic display panel as recited in  claim 13 , wherein a method of forming the driving electrode patterns comprises performing a photoresist coating process, an exposure and development process, and an etching process. 
     
     
         16 . The manufacturing method of the electrophoretic display panel as recited in  claim 13 , wherein a method of forming the conductive lines comprises performing a photoresist coating process, an exposure and development process, and an etching process. 
     
     
         17 . The manufacturing method of the electrophoretic display panel as recited in  claim 13 , wherein each of the display media comprises an electrophoretic liquid, a plurality of black charged particles, and a plurality of white charged particles, and the black charged particles and the white charged particles are distributed into the electrophoretic liquid.