Transflective liquid crystal display device and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-10126595-B2
Application number	US-201314361036-A
Country	US
Kind code	B2
Filing date	Jun 7, 2013
Priority date	Mar 27, 2013
Publication date	Nov 13, 2018
Grant date	Nov 13, 2018

Abstract

A transflective liquid crystal display device and a manufacturing method thereof are provided. The transflective liquid crystal display device comprises: a transflective liquid crystal display module (10) comprising a plurality of pixel units, and each pixel unit comprising a transmissive area and a reflective area; a backlight source (20) provided below the transflective liquid crystal display module (10); a condensing layer (30) provided at a face of the backlight source (20) facing the transflective liquid crystal display module (10) and comprising a plurality of condensing lenses (31) which correspond to the plurality of pixel units one by one so as to converge the internal light emitted from the backlight source (20) at the transmissive areas of corresponding pixel units; and a reflective layer (40) provided between the condensing layer (30) and the liquid crystal display module (10) and comprising meshes (41) passing the internal light converged by each said condensing lens (31).

First claim

The invention claimed is:

1. A transflective liquid crystal display device, comprising:
a transflective liquid crystal display module comprising a plurality of pixel units, and each pixel unit comprising a transmissive area and a reflective area, wherein the transflective liquid crystal display module comprises: a first substrate and a second substrate, and a liquid crystal layer provided between the first substrate and the second substrate, wherein, the first substrate and the second substrate are configured to be assembled to form a liquid crystal cell;
a backlight source arranged to be opposed to a main surface of the transflective liquid crystal display module;
a condensing layer provided at a face of the backlight source facing the transflective liquid crystal display module and comprising a plurality of condensing lenses which correspond to the plurality of pixel units one by one so as to converge internal light emitted from the backlight source to the transmissive areas of corresponding pixel units; and
a reflective layer provided between the condensing layer and the transflective liquid crystal display module and comprising meshes through which the internal light converged by each of the condensing lens passes, wherein the reflective layer is provided on a side of the second substrate facing the condensing layer,
wherein, the second substrate is an array substrate,
wherein, the reflective layer is in direct contact with the condensing layer,
wherein, in a direction perpendicular to the transflective liquid crystal display module, focal points of the condensing lenses are located on a side of the reflective layer facing away from the transflective liquid crystal display module.

2. The transflective liquid crystal display device according to claim 1 , wherein, external light irradiated to the transmissive area of each pixel unit is reflected by the reflective layer to the transmissive area of an adjacent pixel unit.

3. The transflective liquid crystal display device according to claim 2 , wherein, each of the condensing lenses has a center line coinciding with that of the transmissive area of a corresponding pixel unit.

4. The transflective liquid crystal display device according to claim 2 , wherein, the condensing lens is a prism or convex lens.

5. The transflective liquid crystal display device according to claim 2 , wherein, the first substrate is a color filter substrate.

6. The transflective liquid crystal display device according to claim 2 , wherein, parts of the reflective layer between each two meshes correspond to the reflective areas of the pixel units.

7. The transflective liquid crystal display device according to claim 2 , wherein, there is a predetermined distance between the reflective layer and the transflective liquid crystal display module.

8. The transflective liquid crystal display device according to claim 1 , wherein, each of the condensing lenses has a center line coinciding with that of the transmissive area of a corresponding pixel unit.

9. The transflective liquid crystal display device according to claim 8 , wherein, the center line perpendicular to the reflective layer and passing through each of the meshes coincides with that of a corresponding condensing lens.

10. The transflective liquid crystal display device according to claim 1 , wherein, the condensing lens is a prism or convex lens.

11. The transflective liquid crystal display device according to claim 10 , wherein, the condensing layer is a transparent polymer optical film or glass layer.

12. The transflective liquid crystal display device according to claim 1 , wherein, the reflective layer is a metal reflective layer.

13. The transflective liquid crystal display device according to claim 1 , wherein, the first substrate is a color filter substrate.

14. The transflective liquid crystal display device according to claim 13 , wherein, the transflective liquid crystal display module further comprises: an upper orientation layer provided on a face of the color filter substrate facing the liquid crystal layer and a lower orientation layer provided on a face of the array substrate facing the liquid crystal layer, and the lower orientation layer is above the reflective layer.

15. The transflective liquid crystal display device according to claim 1 , wherein, parts of the reflective layer between each two meshes correspond to the reflective areas of the pixel units.

16. The transflective liquid crystal display device according to claim 1 , wherein, there is a predetermined distance between the reflective layer and the transflective liquid crystal display module.

17. A manufacturing method of a transflective liquid crystal display device, comprising following steps:
producing a condensing layer comprising a plurality of condensing lenses;
producing a reflective layer comprising meshes thereon corresponding to the condensing lenses one by one;
fixing the resultant condensing layer on a backlight source; and
fixing the resultant reflective layer on the condensing layer, and making the meshes of the reflective layer correspond to the condensing lenses of the condensing layer one by one,
wherein, the transflective liquid crystal display device comprises a transflective liquid crystal display module comprising a plurality of pixel units, and each pixel unit comprising a transmissive area and a reflective area, the transflective liquid crystal display module comprises: a first substrate and a second substrate and a liquid crystal layer provided between the first substrate and the second substrate, wherein, the first substrate and the second substrate are configured to be assembled to form a liquid crystal cell, the second substrate is an array substrate,
wherein the reflective layer is provided on a side of the second substrate facing the condensing layer, the reflective layer being in direct contact with the condensing layer,
wherein, in a direction perpendicular to the transflective liquid crystal display module, focal points of the condensing lenses are located on a side of the reflective layer facing away from the transflective liquid crystal display module.

18. The manufacturing method of a transflective liquid crystal display device according to claim 17 , prior to producing the condensing layer, further comprising: determining a center to center spacing of the condensing lenses according to a center to center spacing between the pixel units in the transflective liquid crystal display module, so that the condensing lenses are centrosymmetric to the pixel units.

19. The manufacturing method of a transflective liquid crystal display device according to claim 17 , wherein, there is a predetermined distance between the reflective layer and the transflective liquid crystal display module.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Li Mingchao

Classifications

• G02F1/133555 Primary

  Transflectors · CPC title

• G02F1/133605 Primary

  including specially adapted reflectors · CPC title

• G02F1/133526

  Lenses, e.g. microlenses or Fresnel lenses · CPC title

• G02F1/133611

  including means for improving the brightness uniformity · CPC title

• G02F2001/133567

  Physics · mapped topic