Method for improving luminance uniformity of side-edge curved module

Patent metadata

Field	Value
Publication number	US-2016334565-A1
Application number	US-201414378385-A
Country	US
Kind code	A1
Filing date	May 28, 2014
Priority date	May 4, 2014
Publication date	Nov 17, 2016
Grant date	—

Abstract

The present invention relates to a method for improving luminance uniformity of a side-edge curved module. The method includes: (1) dividing a display zone of a curved panel display zone into a plurality of panel grid cells and sequentially marking the plurality of grid cells as panel grid cells 1-n, where n is a natural number; (2) dividing a light guide plate located exactly under the curved panel display zone into a plurality of corresponding light guide plate grid cells, each of the light guide plate grid cells having a dot density being indicated by Pn; (3) measuring transmittance of each of the panel grid cells, the transmittance of each of the panel grid cells being indicated by tn; and (4) taking the transmittance tc of the panel grid cell c that is located close to a center of the curved panel display zone as a reference, where c is a natural number less than n and the dot density of the light guide plate grid cell c corresponding to the panel grid cell c is indicated by Pc, wherein the dot density Pn of a light guide plate grid cell n is set between Pc×0.25×tc/tn to Pc×4×tc/tn. The present invention helps eliminate dark zones of a curved module and improves the luminance uniformity without increasing the product design expenditure.

First claim

What is claimed is:

1 . A method for improving luminance uniformity of a side-edge curved module, comprising:
(1) dividing a display zone of a curved panel display zone into a plurality of panel grid cells and sequentially marking the plurality of grid cells as panel grid cells 1-n, where n is a natural number; (2) dividing a light guide plate located exactly under the curved panel display zone into a plurality of corresponding light guide plate grid cells, each of the light guide plate grid cells having a dot density being indicated by Pn; (3) measuring transmittance of each of the panel grid cells, the transmittance of each of the panel grid cells being indicated by tn; and (4) taking the transmittance tc of the panel grid cell c that is located close to a center of the curved panel display zone as a reference, where c is a natural number less than n and the dot density of the light guide plate grid cell c corresponding to the panel grid cell c is indicated by Pc, wherein the dot density Pn of a light guide plate grid cell n is set between Pc×0.25×tc/tn to Pc×4×tc/tn.

2 . The method for improving luminance uniformity of a side-edge curved module as claimed in claim 1 , wherein in Step 4, the dot density Pn of the light guide plate grid cell n is set between Pc×0.6×tc/tn to Pc×1.5×tc/tn.

3 . The method for improving luminance uniformity of a side-edge curved module as claimed in claim 1 , wherein in Step 3, transmittance of a sample dot of each of the panel grid cells is designated to stand for the transmittance of the panel grid cell where the sample dot is located.

4 . The method for improving luminance uniformity of a side-edge curved module as claimed in claim 3 , wherein in Step 1, the display zone of the curved panel is divided according to a 9×9 array into 81 panel grid cells and in Step 4, the panel grid cell c that is located close to the center is the 41st one of the panel grid cells.

5 . The method for improving luminance uniformity of a side-edge curved module as claimed in claim 4 , wherein with a linear length of the curved panel display zone being designated by W and a linear width of the curved panel display zone being designated by H, the panel grid cells at four corners of the 9×9 array of the panel grid cells each have a light of 3W/20 and a width of 3H/20, while the remaining ones of the panel grid cells selectively have a length of W/10 or a width of H/10.

6 . The method for improving luminance uniformity of a side-edge curved module as claimed in claim 5 , wherein the sample points have a spacing distance of W/10 in the lengthwise direction and H/10 in the widthwise direction.

7 . The method for improving luminance uniformity of a side-edge curved module as claimed in claim 1 , wherein in Step 1, the display zone of the curved panel is divided according to a 10×10 array into 100 panel grid cells.

8 . The method for improving luminance uniformity of a side-edge curved module as claimed in claim 1 , wherein in Step 1, the display zone of the curved panel is divided according to a 11×11 array into 121 panel grid cells.

9 . A method for improving luminance uniformity of a side-edge curved module, comprising:
(1) dividing a display zone of a curved panel display zone into a plurality of panel grid cells and sequentially marking the plurality of grid cells as panel grid cells 1-n, where n is a natural number; (2) dividing a light guide plate located exactly under the curved panel display zone into a plurality of corresponding light guide plate grid cells, each of the light guide plate grid cells having a dot density being indicated by Pn; (3) measuring transmittance of each of the panel grid cells, the transmittance of each of the panel grid cells being indicated by tn; and (4) taking the transmittance tc of the panel grid cell c that is located close to a center of the curved panel display zone as a reference, where c is a natural number less than n and the dot density of the light guide plate grid cell c corresponding to the panel grid cell c is indicated by Pc, wherein the dot density Pn of a light guide plate grid cell n is set between Pc×0.25×tc/tn to Pc×4×tc/tn; wherein in Step 4, the dot density Pn of the light guide plate grid cell n is set between Pc×0.6×tc/tn to Pc×1.5×tc/tn.

10 . The method for improving luminance uniformity of a side-edge curved module as claimed in claim 9 , wherein in Step 3, transmittance of a sample dot of each of the panel grid cells is designated to stand for the transmittance of the panel grid cell where the sample dot is located.

11 . The method for improving luminance uniformity of a side-edge curved module as claimed in claim 10 , wherein in Step 1, the display zone of the curved panel is divided according to a 9×9 array into 81 panel grid cells and in Step 4, the panel grid cell c that is located close to the center is the 41st one of the panel grid cells.

12 . The method for improving luminance uniformity of a side-edge curved module as claimed in claim 11 , wherein with a linear length of the curved panel display zone being designated by W and a linear width of the curved panel display zone being designated by H, the panel grid cells at four corners of the 9×9 array of the panel grid cells each have a light of 3W/20 and a width of 3H/20, while the remaining ones of the panel grid cells selectively have a length of W/10 or a width of H/10.

13 . The method for improving luminance uniformity of a side-edge curved module as claimed in claim 12 , wherein the sample points have a spacing distance of W/10 in the lengthwise direction and H/10 in the widthwise direction.

Assignees

• Shenzhen China Star Optoelect

Inventors

• Wang Jiangfeng

Classifications

• G02B6/004

  Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles · CPC title

• G02B6/0061 Primary

  to provide homogeneous light output intensity · CPC title

• G02F1/133611

  including means for improving the brightness uniformity · CPC title

• G02F1/133604

  with lamps · CPC title

• G02F1/1336

  Illuminating devices · CPC title