Touch display panel, producing method thereof, and display apparatus

Patent metadata

Field	Value
Publication number	US-9885902-B2
Application number	US-201515113485-A
Country	US
Kind code	B2
Filing date	Oct 12, 2015
Priority date	May 27, 2015
Publication date	Feb 6, 2018
Grant date	Feb 6, 2018

Abstract

The present application provides a touch display panel, a method for producing the same and a display apparatus. The touch display panel includes a liquid crystal screen and a protection cover plate covered at a light exiting side of the liquid crystal screen. The touch display panel further includes a sound elimination membrane, located at the light exiting side of the liquid crystal screen, and configured to eliminate sound waves generated when the touch display panel is touched. With the provision of the sound elimination membrane, the touch display panel can eliminate the vibration sound waves generated during the knocking touch process, and avoid the alignment difference of the liquid crystal molecules by the vibration sound waves, thereby avoiding a display mura caused by the vibration sound waves and further significantly suppressing the display mura generated during the knocking touch process.

First claim

What is claimed is:

1. A touch display panel, comprising a liquid crystal screen and a protection cover plate covered at a light exiting side of the liquid crystal screen, wherein
the touch display panel further comprises a sound elimination membrane located at the light exiting side of the liquid crystal screen and configured to eliminate sound waves generated when the touch display panel is touched,
wherein the sound elimination membrane comprises a base body of the membrane and a plurality of holes provided in the base body of the membrane,
wherein the holes have a same distributing density as that of pixels on the touch display panel, so that the holes have one-to-one distribution relationship with the pixels.

2. The touch display panel as claimed in claim 1 , wherein the plurality of holes are identical in terms of sizes and shapes and are evenly distributed.

3. The touch display panel as claimed in claim 1 , wherein the holes comprise through holes passing through a thickness of the base body of the membrane or blind holes provided in the base body of the membrane.

4. The touch display panel as claimed in claim 1 , wherein an opening size of the holes is in a range of 5-15 μm.

5. The touch display panel as claimed in claim 1 , wherein the shape of the holes comprises any of a cone frustum, a truncated pyramid, a cylinder or a prism, or any combination of these shapes.

6. The touch display panel as claimed in claim 1 , wherein a thickness of the sound elimination membrane is in a range of 20-40 μm.

7. The touch display panel as claimed in claim 1 , wherein the sound elimination membrane is made of a photo-sensitive resin material which is transparent.

8. The touch display panel as claimed in claim 1 , wherein the liquid crystal screen comprises a color filter substrate and an array substrate assembled together, wherein the color filter substrate is located at the light exiting side of the liquid crystal screen and the protection cover plate is located at one side of the color filter substrate facing away from the array substrate.

9. The touch display panel as claimed in claim 8 , wherein the sound elimination membrane is located between the color filter substrate and the protection cover plate.

10. The touch display panel as claimed in claim 8 , wherein the sound elimination membrane is located at one side of the color filter substrate facing away from the protection cover plate.

11. The touch display panel as claimed in claim 8 , wherein the color filter substrate comprises a substrate and a polarizer provided at one side of the substrate facing away from the array substrate, and the sound elimination membrane is located between the substrate and the polarizer.

12. The touch display panel as claimed in claim 8 , wherein the sound elimination membrane is located at one side of the protection cover plate facing away from the color filter substrate.

13. The touch display panel as claimed in claim 8 , further comprising a touch layer provided onto the array substrate, the color filter substrate or the protection cover plate.

14. A display apparatus, comprising the touch display panel as claimed in claim 1 .

15. A method for producing the touch display panel as claimed in claim 1 , comprising a step of manufacturing the sound elimination membrane at the light exiting side of the liquid crystal screen.

16. The method as claimed in claim 15 , wherein the step of manufacturing the sound elimination membrane at the light exiting side of the liquid crystal screen comprises:
forming the sound elimination membrane onto the color filter substrate or the protection cover plate of the liquid crystal screen by a single exposure process.

17. The method as claimed in claim 15 , wherein the step of manufacturing the sound elimination membrane at the light exiting side of the liquid crystal screen comprises:
forming the sound elimination membrane onto a glass substrate by a single exposure process, then peeling off the sound elimination membrane from the glass substrate, and finally attaching the sound elimination membrane onto the color filter substrate or the protection cover plate by a transparent optical adhesive.

Assignees

• Boe Technology Group Co Ltd
• Hefei Xinsheng Optoelectronics Technology Co Ltd

Inventors

• Wang Chen
• Lv Fengzhen
• Guo Xiao
• Zhang Xinxia
• Lv Kui
• Xiang Kang

Classifications

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G10K11/16

  Methods or devices for protecting against, or for damping, noise or other acoustic waves in general (G10K11/36 takes precedence) · CPC title

• G02F2001/133302

  Physics · mapped topic

• G02F2202/28

  Adhesive materials or arrangements · CPC title

• G02F1/133528

  Polarisers · CPC title