Liquid crystal display device with particular on substrate wiring, portable terminal and display equipment provided with the liquid crystal display device

Abstract

A segment electrode group 10 is passed through a lower side portion of a sealing resin 7 to be connected to a connection terminal group for segment electrode 8. A connection terminal group for common electrode 6 is juxtaposed to the connection terminal group for segment electrode 8 along the lower side portion of the sealing resin 7. The connection terminal group for common electrode 6 is connected to a wiring pattern 5 through the lower side portion of the sealing resin 7. The wiring pattern 5 passes through an area between a right side portion of the sealing resin 7 and a display area 3 to be connected to a conduction portion between substrates Q 1. The conduction portion between substrates Q 1 contains numerous conductive particles so as to electrically connect the wiring pattern 5 and a common electrode group 4 to each other. By this arrangement, downsizing of a liquid crystal display device can be accomplished.

1. A liquid crystal display device comprising:
 a first substrate having a segment electrode group and an alignment film formed thereon; 
 a second substrate having a common electrode group and an alignment film formed thereon; 
 a frame-shaped seal member for joining the fist and second substrates together; 
 a liquid crystal layer filled between the first and second substrates and inside the seal member; 
 a display area provided in an area where the segment electrode group and the common electrode group are opposed to each other; 
 a connection terminal group for segment electrode and a connection terminal group for common electrode which are formed on the first substrate and external to one side portion of the seal member; 
 a wiring pattern formed on the first substrate such that it extends from the connection terminal group for common electrode and passes through an area between another side portion of the seal member and the display area; and 
 a conduction portion between substrates which is disposed within another side portion of the seal member or between another side portion of the seal member and the display area for electrically connecting the wiring pattern and the common electrode group to each other. 
 
     
     
       2. The liquid crystal display device according to  claim 1 , wherein a light-shielding film is formed on the second substrate such that it is opposed to the wiring pattern. 
     
     
       3. The liquid crystal display device according to  claim 1 , wherein each of the segment electrode group and the wiring pattern is formed of a metal film. 
     
     
       4. The liquid crystal display device according to  claim 3 , wherein a light-shielding film is formed on the second substrate such that it is opposed to the wiring pattern. 
     
     
       5. The liquid crystal display device according to  claim 1 , wherein a dummy pattern is formed on the second substrate such that it is disposed in a region opposite to the wiring pattern and between the seal member and the display area. 
     
     
       6. The liquid crystal display device according to  claim 1 , wherein a dummy pattern is formed on the second substrate such that it is disposed in a region opposite to the wiring pattern and within the seal member. 
     
     
       7. The liquid crystal display device according to  claim 1 , wherein a dummy pattern is formed on the first substrate such that it is disposed in a region between the seal member and the display area where the wiring pattern is not formed, and also on the second substrate such that it is opposed to said region. 
     
     
       8. The liquid crystal display device according to  claim 1 , wherein a dummy pattern is formed on the first substrate such that it is disposed in a region within the seal member where the wiring pattern is not formed, and also on the second substrate such that it is opposed to said region. 
     
     
       9. The liquid crystal display device according to  claim 1 , wherein an end of the wiring pattern or an end of the common electrode group is disposed within another side portion of the seal member. 
     
     
       10. The liquid crystal display device according to  claim 1 , wherein an end of the wiring pattern is disposed within another side portion of the seal member. 
     
     
       11. The liquid crystal display device according to  claim 1 , wherein the wiring pattern is formed of a metal, and a dummy pattern for display frame is formed on the first substrate such that it is disposed between the seal member and the display area where the wiring pattern is not formed. 
     
     
       12. The liquid crystal display device according to  claim 1 , wherein the wiring pattern is formed of a metal, and a dummy pattern for display frame is formed on the second substrate such that it is disposed between the seal member and the display area where the wiring pattern is not formed. 
     
     
       13. The liquid crystal display device according to  claim 1 , wherein the segment electrode group comprises a wiring pattern formed of a layer in which a transparent conductive film and a metal film are laminated together. 
     
     
       14. The liquid crystal display device according to  claim 13 , wherein the wiring pattern is formed of a metal film.  
     
     
       15. The liquid crystal display device according to  claim 13 , wherein a ratio between the area of the transparent conductive film and the area of the metal film is set for each pixel of the segment electrode group. 
     
     
       16. A portable terminal comprising the liquid crystal display device of  claim 1  provided therein. 
     
     
       17. Display equipment comprising the liquid crystal display device of  claim 1  provided therein. 
     
     
       18. A liquid crystal display device comprising:
 a first substrate having a segment electrode group and an alignment film formed thereon; 
 a second substrate having a common electrode group and an alignment film formed thereon; 
 a frame-shaped seal member for joining the fist and second substrates together; 
 a liquid crystal layer filled between the first and second substrates and inside the seal member; 
 a display area provided in an area where the segment electrode group and the common electrode group are opposed to each other; 
 a connection terminal group for segment electrode which is formed in one peripheral region on the first substrate and external to the seal member; 
 a first and second connection terminal groups group for common electrode which are is formed on the first substrate and external to one side portion of the seal member; 
 a second connection terminal group for common electrode which is formed on a first substrate and external to one side portion of the seal member; 
 a first wiring pattern formed on the first substrate such that it extends from the first connection terminal group for common electrode and passes through an area between another a second side portion of the seal member and the display area; 
 a first conduction portion between substrates which is disposed within another the second side portion of the seal member or between another side portion of the seal member and the display area for electrically connecting the first wiring pattern formed on the first substrate and a part of the common electrode group formed on the second substrate to each other; 
 a second wiring pattern formed on the second substrate such that it extends from a residual part of the common electrode group and passes through an area between another a third side portion of the seal member and the display area; and 
 a second conduction portion between substrates which is disposed within one the third side portion of the seal member or between one side portion of the seal member and the display area which is opposed to the second side portion of the seal member for electrically connecting the second wiring pattern and the second connection terminal group for common electrode to each other. 
 
     
     
       19. A portable terminal comprising the liquid crystal display device of  claim 18  provided therein. 
     
     
       20. Display equipment comprising the liquid crystal display device of  claim 18  provided therein. 
     
     
       21. The liquid crystal display device according to claim 1,
 wherein each of the wiring pattern has a first and a second parallel portions which are arranged in a direction substantially parallel to the segment electrode group,   wherein each of the wiring pattern further includes an oblique portion connecting the first parallel portions with the second parallel portions which is arranged obliquely to the segment electrode group in an intermediate region between the display area and the seal member.   
     
     
       22. The liquid crystal display device according to claim 21, wherein each said oblique portion has an oblique angle with respect to the segment electrode group, the oblique angle being less than 90 degrees and, wherein the oblique angle becomes smaller as the oblique portions become near the another side portion of the seal member. 
     
     
       23. The liquid crystal display device according to claim 1, wherein the wiring patterns include a wider portion within another side portion of the seal member, the wider portion being wider than other portion of the wiring patterns. 
     
     
       24. The liquid crystal display device according to claim 1, further comprising a driver IC mounted on the first substrate, which is arranged in the vicinity of the seal member, for driving the display device. 
     
     
       25. The liquid crystal display device according to claim 24, further comprising an injection inlet formed in a second side portion of the seal member, the inlet injecting a liquid crystal material into an enclosure defined by the seal member, the first substrate, and the second substrate, wherein the second side portion is opposite to the one side portion.