CAMERA MODULE INTEGRATED LIQUID DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF

• US 20170187934A1
• Filed: 11/09/2016
• Published: 06/29/2017
• Est. Priority Date: 12/28/2015
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Display Co., Ltd.
• Inventors: KWAK, Jinwook, HONG, JuIk, KIM, Jangcheol
• Granted Patent: US 10,334,148 B2
• Time in Patent Office: Days
• CPC Class Codes: G02F 1/13312 Circuits comprising photodetectors for purposes other than feedback
• CPC Class Codes: G02F 1/1333 Constructional arrangements; Manufacturing methodsG02F1/135, G02F1/136 take precedence
• CPC Class Codes: G02F 1/133388 with constructional differences between the display region and the peripheral region
• CPC Class Codes: G02F 1/133512 Light shielding layers, e.g. black matrix G02F1/136209 takes precedence
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/1339 Gaskets; Spacers; Sealing of cells
• CPC Class Codes: G06F 1/1605 Multimedia displays, e.g. with integrated or attached speakers, cameras, microphones
• CPC Class Codes: G06F 1/1637 Details related to the display arrangement, including those related to the mounting of the display in the housing
• CPC Class Codes: G06F 1/1686 the I/O peripheral being an integrated camera
• CPC Class Codes: H04N 23/50 Constructional details
• CPC Class Codes: H04N 23/51 Housings
• CPC Class Codes: H04N 23/57 Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices

Abstract

A liquid-crystal display (LCD) device includes: an array substrate on which a sub-pixel is disposed; a color filter substrate on which a color filter corresponding to the sub-pixel is disposed; and a liquid-crystal layer between the array substrate and the color filter substrate. The array substrate comprises a lens hole, the color filter substrate comprises a lens hole guide, and a diameter of the lens hole is smaller than an inner diameter of the lens hole guide.

Claims

1. A liquid-crystal display (LCD) device, comprising:

an array substrate on which a sub-pixel is disposed;

a color filter substrate on which a color filter corresponding to the sub-pixel is disposed; and

a liquid-crystal layer between the array substrate and the color filter substrate,

wherein the array substrate comprises a lens hole, the color filter substrate comprises a lens hole guide, and a diameter of the lens hole is smaller than a diameter of the lens hole guide.

2. The LCD device of claim 1, wherein a center of the lens hole and a center of the lens hole guide are configured to be adjacent to or aligned with each other, and

wherein an inner edge of the lens hole guide is spaced apart from an edge of the lens hole.

3. The LCD device of claim 1, wherein the lens hole guide is configured to surround the lens hole and to absorb at least some pressure exerted on the array substrate during a process of forming the lens hole.

4. The LCD device of claim 1, wherein the color filter substrate further comprises a black matrix, and

wherein the black matrix is disposed between the color filter substrate and the lens hole guide and comprises an aperture smaller than a diameter of the lens hole, and a center of the aperture and a center of the lens hole are configured to be adjacent to or aligned with each other.

5. The LCD device of claim 4, wherein the color filter substrate further comprises an overcoat layer disposed above the lens hole guide, and

wherein the overcoat layer is configured to pass light of visible wavelength bands, to cover the black matrix and the aperture, and to reduce step difference or surface unevenness between the black matrix and the aperture.

6. The LCD device of claim 4, further comprising:

a camera module in an area of the array substrate other than the area where the sub-pixels are disposed,

wherein the camera module comprises a sensor part and a lens part,

the lens part is accommodated by the lens hole and the lens hole guide, and

the camera module is configured to capture images via the aperture.

7. The LCD device of claim 1, further comprising:

a first polarization plate under the array substrate; and

a second polarization plate on the color filter substrate,

wherein the second polarization plate covers the aperture and comprises a transparent portion in line with the aperture.

8. The LCD device of claim 7, wherein a transmittance of visible light is higher at the transparent portion than at the remaining portion of the second polarization plate.

9. The LCD device of claim 1, wherein the array substrate further comprises a measurement pattern configured to be concentric with the lens hole.

10. The LCD device of claim 9, wherein the measurement pattern is made of a material of a gate line and/or a material of a data line of the array substrate.

11. The LCD device of claim 9, wherein the measurement pattern has a shape corresponding to the lens hole.

12. The LCD device of claim 10, wherein an inner diameter of the measurement pattern is larger in diameter than the lens hole.

13. The LCD device of claim 10, wherein the measurement pattern is removed during a process of forming the lens hole.

14. The LCD device of claim 10, wherein the measurement pattern is hidden by the black matrix.

15. The LCD device of claim 10, wherein the measurement pattern has a circular ring shape or a donut shape.

16. A method of fabricating a liquid-crystal display (LCD) device, the method comprising:

measuring a thickness of an array substrate with a confocal sensor by using a measurement pattern on the array substrate;

forming a groove in a position where a lens hole is to be formed to a depth determined based on the thickness of the array substrate measured with the confocal sensor;

attaching a glass core to a region where the groove is formed by applying adhesion with a taping equipment, and then separating the glass core from the array substrate with the taping equipment to thereby form the lens hole; and

inserting a camera module into the array substrate through the lens hole.