USRE47584EActiveUtility

Display device

58
Assignee: LG INNOTEK CO LTDPriority: Apr 5, 2011Filed: Jul 7, 2017Granted: Aug 27, 2019
Est. expiryApr 5, 2031(~4.7 yrs left)· nominal 20-yr term from priority
Inventors:Seung Ryong ParkHyun Ho ChoiGi Seok Lee
G02B 6/0026G02B 6/009G02B 6/0073G02B 6/0068
58
PatentIndex Score
0
Cited by
31
References
36
Claims

Abstract

Disclosed is a display device. The display device includes a light source, a light guide part to receive a light emitted from the light source, a light conversion member between the light source and the light guide part, and a spacer between the light source and the light conversion member.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
       1. A display device comprising:
 a light source;   a light guide part to receive a light emitted from the light source;   a light conversion member between the light source and the light guide part;   a spacer between the light source and the light conversion member;   a first support part extending from the spacer to the light guide part while supporting the light conversion member; and   a second support part facing the first support part while interposing the light conversion member therebetween.   
     
     
       2. The display device of  claim 1 , wherein the spacer has a width in a range of about 200 μm to about 2.5 mm. 
     
     
       3. The display device of  claim 2 , wherein the spacer adheres to the light conversion member and the light source. 
     
     
       4. The display device of  claim 1 , wherein the spacer has a refractive index corresponding to a refractive index of the light guide plate. 
     
     
       5. The display device of  claim 1 , wherein the spacer, the first support part, the second support part and the light guide part are integrally formed with each other. 
     
     
       6. A display device comprising:
 a light guide plate;   a light source at one side of the light guide plate;   a light conversion member in a groove defined in the light guide plate; and   a display panel on the light guide plate,   wherein the groove comprises a first inner lateral side inclined with respect to a top surface of the light guide plate, and a distance between the first inner lateral side and the light conversion member is gradually decreased as the groove becomes deeper.   
     
     
       7. The display device of  claim 6 , wherein
 an effective display region to display an image is defined in the display panel provided on the light guide plate,   a central region corresponding to the effective display region and an outer region around the central region are defined in the light guide plate, and   the light conversion member is provided in the outer region.   
     
     
       8. The display device of  claim 6 , wherein the light guide plate comprises:
 a spacer between the light source and the light conversion member; and   a light guide part in which the light conversion member is sandwiched between the spacer and the light guide part.   
     
     
       9. The display device of  claim 8 , wherein the light guide plate further comprises a first support part extending from the spacer to the light guide part while supporting the light conversion member. 
     
     
       10. The display device of  claim 9 , wherein the light guide plate further comprises a second support part facing the first support part while interposing the light conversion member therebetween. 
     
     
       11. The display device of  claim 6 , further comprising an adhering member filled in the groove to adhere to the light conversion member and an inner lateral side of the groove. 
     
     
       12. The display device of  claim 6 , wherein a first groove is formed in a top surface of the light guide plate, and
 a second groove is formed in a bottom surface provided in opposition to the top surface of the light guide plate, and   wherein the light conversion member comprises:   a first light conversion member in the first groove; and   a second light conversion member in the second groove.   
     
     
       13. The display device of  claim 12 , wherein the first and second light conversion members are overlapped with each other when viewed from the light source. 
     
     
       14. A display device comprising:
 a light guide plate;   a light source to emit a light to the light guide plate;   a light conversion member in the light guide plate; and   a display panel on the light guide plate, wherein a first groove is formed in a top surface of the light guide plate, and   a second groove is formed in a bottom surface provided in opposition to the top surface of the light guide plate, and   wherein the light conversion member comprises:   a first light conversion member in the first groove; and   a second light conversion member in the second groove.   
     
     
       15. The display device of  claim 14 , wherein the first and second light conversion members are overlapped with each other when viewed from the light source. 
     
     
       16. The display device of  claim 14 , wherein
 an effective display region to display an image is defined in the display panel provided on the light guide plate,   a central region corresponding to the effective display region and an outer region around the central region are defined in the light guide plate, and   the light conversion member is provided in the outer region.   
     
     
       17. A display device comprising:
 a light source;   a light guide part to receive a light emitted from the light source;   a light conversion member between the light source and the light guide part;   a spacer disposed on an incident surface of the light conversion member;   a first support part disposed under the light conversion member; and   a second support part facing the first support part while interposing the light conversion member therebetween,   wherein the light conversion member comprises:   a tube;   a plurality of quantum dots in the tube; and   a matrix in the tube,   wherein the light conversion member is between the spacer and the light guide part,   wherein the light source includes a plurality of LEDs arranged in line with each other in a direction,   wherein the tube extends in the direction in which the plurality of LEDs are arranged,   wherein the plurality of LEDs are spaced apart from the light conversion member by the spacer, and   wherein the spacer, the first support part, and the second support part include the same material and are directly in contact with the light conversion member.    
     
     
       18. The display device of claim 17, wherein the tube includes a capillary glass.  
     
     
       19. The display device of claim 17, wherein the spacer has a width in a range of 200 μm to 2.5 mm.  
     
     
       20. The display device of claim 17, wherein the tube extends in the direction along a length of the tube.  
     
     
       21. The display device of claim 17, wherein the matrix includes polymer.  
     
     
       22. The display device of claim 17, further comprising an air layer in the tube.  
     
     
       23. The display device of claim 17, further comprising a circuit board mounting the plurality of LEDs.  
     
     
       24. The display device of claim 17, wherein the tube is sealed at at least one end of the tube.  
     
     
       25. The display device of claim 24, wherein the tube is sealed by a sealing part.  
     
     
       26. The display device of claim 17, wherein the spacer is between the light source and the light conversion member.  
     
     
       27. A display device comprising:
 a light source;   a light guide part to receive a light emitted from the light source;   a light conversion member between the light source and the light guide part;   a spacer disposed on an incident surface of the light conversion member;   a first support part extending from the spacer toward the light guide part while supporting the light conversion member; and   a second support part facing the first support part while interposing the light conversion member therebetween,   wherein the light conversion member comprises:   a tube;   a plurality of quantum dots in the tube; and   a matrix in the tube,   wherein the light conversion member is between the spacer and the light guide part,   wherein the light source includes a plurality of LEDs arranged in line with each other in a direction,   wherein the tube extends in the direction in which the plurality of LEDs are arranged, and   wherein the plurality of LEDs are spaced apart from the light conversion member by the spacer.    
     
     
       28. The display device of claim 27, wherein the tube include a capillary glass.  
     
     
       29. The display device of claim 27, wherein the first support part is provided under the light conversion member.  
     
     
       30. The display device of claim 27, wherein the second support part is provided on the light conversion member.  
     
     
       31. The display device of claim 27, wherein the light conversion member is sandwiched between the first and second support part.  
     
     
       32. The display device of claim 27, wherein the spacer, the first support part, and the second support part include the same material.  
     
     
       33. The display device of claim 27, wherein the tube extends in the direction along a length of the tube.  
     
     
       34. The display device of claim 27, further comprising an air layer in the tube.  
     
     
       35. The display device of claim 27, wherein the tube is sealed at at least one end of the tube.  
     
     
       36. The display device of claim 27, wherein the spacer is between the light source and the light conversion member.

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