HOLLOWED ELECTRONIC DISPLAY

• US 20170358611A1
• Filed: 06/16/2017
• Published: 12/14/2017
• Est. Priority Date: 06/10/2016
• Status: Active Grant

• Current Assignee: Essential Products, Inc.
• Original Assignee: Essential Products, Inc.
• Inventors: Evans, V, David John, Jiang, Xinrui, Rubin, Andrew E., Hershenson, Matthew, Miao, Xiaoyu, Tate, Joseph Anthony, Gagne-Keats, Jason Sean, Zavin, Rebecca Schultz
• Granted Patent: US 9,881,943 B2
• Time in Patent Office: Days
• CPC Class Codes: G02B 26/0833 the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD G02B26/0825 takes precedence; micromechanical devices in general B81B
• CPC Class Codes: G02B 5/201 in the form of arrays
• CPC Class Codes: G02B 5/3033 in the form of a thin sheet or foil, e.g. Polaroid
• CPC Class Codes: G02B 6/0051 Diffusing sheet or layer
• CPC Class Codes: G02F 1/13312 Circuits comprising photodetectors for purposes other than feedback
• CPC Class Codes: G02F 1/13318 Circuits comprising a photodetector
• CPC Class Codes: G02F 1/1333 Constructional arrangements; Manufacturing methodsG02F1/135, G02F1/136 take precedence
• CPC Class Codes: G02F 1/133504 Diffusing, scattering, diffracting elements associated to illuminating devices G02F1/133606
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/133528 Polarisers
• CPC Class Codes: G02F 1/1339 Gaskets; Spacers; Sealing of cells
• CPC Class Codes: G02F 1/1341 Filling or closing of cells
• CPC Class Codes: G02F 1/134336 Matrix
• CPC Class Codes: G02F 1/134345 Subdivided pixels, e.g. for grey scale or redundancy
• CPC Class Codes: G02F 1/1362 Active matrix addressed cells G02F1/134336, G02F1/134363 take precedence
• CPC Class Codes: G02F 1/1368 in which the switching element is a three-electrode device G02F1/136277 takes precedence
• CPC Class Codes: G02F 2201/56 Substrates having a particular shape, e.g. non-rectangular
• CPC Class Codes: G06F 1/1605 Multimedia displays, e.g. with integrated or attached speakers, cameras, microphones
• CPC Class Codes: G06F 1/1686 the I/O peripheral being an integrated camera
• CPC Class Codes: H01L 27/1262 with a particular formation, treatment or coating of the substrate

Abstract

Presented here are manufacturing techniques to create an irregularly shaped electronic display, including a hollow within which a sensor, such as a camera, can be placed. The manufacturing techniques enable the creation of the hollow anytime during the manufacturing process. The resulting electronic display occupies the full side of the mobile device, with the sensors placed within and surrounded by the display.

Claims

1. A method comprising:

providing a mask associated with a plurality of layers in an electronic display, wherein the plurality of layers comprises a color filter (CF) layer and a thin film transistor (TFT) layer;

forming a hollow corresponding to the mask within a CF substrate associated with the CF layer, and a TFT substrate associated with the TFT layer to create a hollowed substrate, the hollowed substrate comprising a hollowed CF substrate and a hollowed TFT substrate;

distributing a plurality of colors on the hollowed CF substrate;

distributing a plurality of thin film transistors on the hollowed TFT substrate;

distributing a plurality of row and column electrodes corresponding to the plurality of thin film transistors such that each row and column electrode in the plurality of row and column electrodes interrupted by the hollow circumvents the hollow;

combining the CF layer and the TFT layer to obtain the electronic display, wherein the electronic display comprises the hollow; and

disposing a sensor inside the hollow.

2. The method of claim 1, said combining the CF layer and the TFT layer, comprising:

depositing a sealant on a layer in the plurality of layers, said depositing comprising tracing an outline associated with the hollowed substrate.

3. The method of claim 2, further comprising:

depositing a plurality of liquid crystal beads inside the outline.

4. The method of claim 1, wherein said forming the hollow comprises:

defining with a laser the hollow within the CF layer and the TFT layer, wherein the hollow associated with the CF layer and the TFT layer corresponds to the mask.

5. The method of claim 1, wherein the mask comprises a rectangular shape with at least two rounded corners.

6. The method of claim 1, wherein the mask comprises a circular shape.

7. The method of claim 1, wherein the mask is disposed proximate to a top edge associated with the electronic display.

8. A method comprising:

providing a mask corresponding to a plurality of layers in an electronic display, wherein the plurality of layers comprises a color filter (CF) layer, a display layer, and a thin film transistor (TFT) layer;

providing the CF layer comprising a CF substrate and a plurality of color regions disposed on the CF substrate;

providing the display layer comprising a plurality of display elements disposed between the CF layer and the TFT layer, the plurality of display elements configured to transmit light;

providing the TFT layer comprising a TFT substrate and a plurality of transistors disposed on the TFT substrate;

forming a hollow within the CF layer, the display layer, and the TFT layer, wherein the hollow associated with the CF layer, the display layer, and the TFT layer, corresponds to the mask;

sealing the CF layer, the display layer, and the TFT layer to obtain a combined layer; and

disposing a sensor inside the hollow.

9. The method of claim 8, said providing the TFT layer comprising:

depositing thin film transistors onto the TFT substrate, wherein the TFT substrate comprises glass;

depositing a photoresist coating on the thin film transistors;

modifying a photomask to include the mask, wherein the modified photomask comprises a plurality of protected areas and a plurality of unprotected areas, and wherein the mask is associated with the plurality of unprotected areas; and

removing the plurality of unprotected areas to leave thin film transistors disposed on the TFT substrate in the plurality of protected areas.

10. The method of claim 8, wherein said forming the hollow comprises:

depositing an etching-resistant sealant on the plurality of layers, wherein the etching-resistant sealant is not deposited on the hollow corresponding to the mask, and wherein the etching-resistant sealant protects the plurality of layers from an etcher;

submerging the plurality of layers in the etcher; and

etching the hollow from the CF layer, the display layer, and the TFT layer, wherein the hollow associated with the CF layer, the display layer, and the TFT layer corresponds to the mask.

11. The method of claim 8, wherein said forming the hollow comprises:

upon said combining the CF layer, the display layer, and the TFT layer, forming the hollow within the combined layer, wherein the hollow corresponds to the mask.

12. The method of claim 8, wherein said forming the hollow comprises:

cutting with a diamond cutter the hollow from the CF layer, the display layer, and the TFT layer, wherein the hollow associated with the CF layer, the display layer, and the TFT layer corresponds to the mask.

13. The method of claim 8, wherein the mask comprises a rectangular shape with at least one rounded corner.

14. A system comprising:

a color filter (CF) layer comprising a plurality of colors disposed on a CF substrate;

a thin film transistor (TFT) layer comprising a plurality of transistors disposed on a TFT substrate, a shape associated with the CF layer corresponding to a shape associated with the TFT layer;

a hollow formed within the CF layer and the TFT layer;

a plurality of display elements disposed between the CF layer and the TFT layer, the plurality of display elements arranged in a shape corresponding to the shape associated with the CF layer, the plurality of display elements operable to transmit light; and

a sensor disposed within the hollow.

15. The system of claim 14, comprising:

a polarizer layer formed into the shape corresponding to the shape associated with the CF layer comprising the hollow.

16. The system of claim 14, comprising:

a light guide plate and a diffuser, the light guide plate and the diffuser formed into a shape corresponding to the shape associated with the CF layer comprising the hollow.

17. The system of claim 14, comprising a sealant disposed within a perimeter of one of the CF layer and the TFT layer.

18. The system of claim 17, the shape associated with the plurality of display elements corresponding to a shape associated with the sealant.

19. The system of claim 14, the plurality of display elements comprising at least one of a liquid crystal display, an organic light emitting diode display (OLED), or a micro-electromechanical systems (MEMS) display.