US-20260126687-A1 - ELECTRONIC DEVICE

Abstract

An electronic device including a first substrate, a second substrate, a display medium layer, a color filter layer, and a viewing-angle barrier layer is provided. The second substrate is disposed opposite to the first substrate and includes a first surface facing the first substrate and a second surface facing away from the first substrate. The display medium layer is disposed between the first substrate and the second substrate. The color filter layer is disposed between the display medium layer and the second substrate. The viewing-angle barrier layer contacts one of the first surface and the second surface. In a normal direction of the first surface, a thickness of the second substrate is less than a thickness of the first substrate.

Inventors

• Chen-Lin Yeh
• Chia-Hsien Hsieh
• Hong-Sheng HSIEH
• Li-Wei Sung

Assignees

• Innolux Corporation
• CarUX Technology Pte. Ltd.

Dates

Publication Date

20260507

Application Date

20251105

Priority Date

20241105

Claims (20)

1. 1 . An electronic device, comprising: a first substrate; a second substrate, disposed opposite to the first substrate, and comprising a first surface facing the first substrate and a second surface facing away from the first substrate; a display medium layer, disposed between the first substrate and the second substrate; a color filter layer, disposed between the display medium layer and the second substrate; and a viewing-angle barrier layer, contacting one of the first surface and the second surface, wherein in a normal direction of the first surface, a thickness of the second substrate is less than a thickness of the first substrate.
2. 2 . The electronic device according to claim 1 , wherein in the normal direction of the first surface, a distance between the viewing-angle barrier layer and the color filter layer is between 37 micrometers and 518 micrometers.
3. 3 . The electronic device according to claim 1 , wherein the viewing-angle barrier layer contacts the first surface.
4. 4 . The electronic device according to claim 3 , further comprising: a planarization layer, disposed between the viewing-angle barrier layer and the color filter layer.
5. 5 . The electronic device according to claim 4 , wherein a refractive index of the planarization layer is between 1.2 and 1.7.
6. 6 . The electronic device according to claim 4 , wherein a distance between the viewing-angle barrier layer and the color filter layer is a height of the planarization layer.
7. 7 . The electronic device according to claim 3 , wherein the viewing-angle barrier layer and the display medium layer are disposed on a same side of the second substrate.
8. 8 . The electronic device according to claim 1 , wherein the viewing-angle barrier layer contacts the second surface.
9. 9 . The electronic device according to claim 8 , wherein a refractive index of the second substrate is between 1.2 and 1.7.
10. 10 . The electronic device according to claim 8 , wherein a distance between the viewing-angle barrier layer and the color filter layer is a height of the second substrate.
11. 11 . The electronic device according to claim 8 , wherein the viewing-angle barrier layer and the display medium layer are disposed on different sides of the second substrate.
12. 12 . The electronic device according to claim 8 , further comprising: a protection layer, wherein the viewing-angle barrier layer is disposed between the protection layer and the second substrate.
13. 13 . The electronic device according to claim 1 , wherein the display medium layer comprises a liquid crystal, an organic light-emitting diode (OLED), or a micro light-emitting diode (micro LED).
14. 14 . The electronic device according to claim 1 , wherein the viewing-angle barrier layer comprises a plurality of sub-barrier layers.
15. 15 . The electronic device according to claim 1 , wherein the viewing-angle barrier layer comprises a plurality of transparent areas, and the transparent areas are arranged in a staggered manner.
16. 16 . The electronic device according to claim 1 , wherein the viewing-angle barrier layer is formed by a material having a masking function.
17. 17 . The electronic device according to claim 1 , further comprising: a polarizing layer, disposed on the second surface of the second substrate.
18. 18 . The electronic device according to claim 1 , further comprising: a display unit layer, comprising the display medium layer and the color filter layer, and having a display area and a non-display area, wherein a width of a transparent area of the viewing-angle barrier layer is less than a width of the display area.
19. 19 . The electronic device according to claim 1 , wherein the viewing-angle barrier layer comprises a first viewing-angle barrier layer and a second viewing-angle barrier layer, the first viewing-angle barrier layer is disposed between the second viewing-angle barrier layer and the display medium layer, and a width of the second viewing-angle barrier layer is less than a width of the first viewing-angle barrier layer.
20. 20 . The electronic device according to claim 19 , wherein an opening of the first viewing-angle barrier layer does not overlap an opening of the second viewing-angle barrier layer.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application claims the priority benefit of Taiwan application serial no. 113142231, filed on Nov. 5, 2024. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification. BACKGROUND Technical Field This disclosure relates to an electronic device, and particularly relates to a display device having a viewing-angle barrier layer. Description of Related Art Electronic devices including display panels, such as tablet computers, notebook computers, smartphones, monitors, and televisions, have become indispensable necessities in modern society. With the booming development of portable electronic products, consumers have high expectations for the quality, functionality, or price of these products. The functions of automotive audio-visual systems are becoming increasingly rich. Based on safety considerations, the display system on the front passenger seat needs to be equipped with a privacy protection function to reduce distraction to the driver during driving conditions and a sharing display function to share information with the driver during non-driving conditions. In recent years, dual-view display or multi-view display modules have been widely applied in automotive audio-visual systems. Such dual-view display or multi-view display modules commonly employ a viewing-angle barrier layer to enable the display to simultaneously present two or more different screens or viewing-angles. Generally speaking, a more cost-effective approach to achieving dual-view or multi-view display technology involves attaching a designed viewing-angle barrier layer to the outside of the color filter substrate of the display. However, this method performs poorly in terms of resolution for dual-view or multi-view displays. In addition, the use of an externally attached viewing-angle barrier layer also makes it more difficult to achieve high-precision alignment accuracy, which in turn affects the yield and production output of the manufacturing process. Based on the above, developing structural designs that may further improve the display performance of an electronic device remains one of the subjects that the industry is currently dedicated to researching. SUMMARY According to some embodiments of the disclosure, an electronic device is provided including a first substrate, a second substrate, a display medium layer, a color filter layer, and a viewing-angle barrier layer. The second substrate is disposed opposite to the first substrate and includes a first surface facing the first substrate and a second surface facing away from the first substrate. The display medium layer is disposed between the first substrate and the second substrate. The color filter layer is disposed between the display medium layer and the second substrate. The viewing-angle barrier layer contacts one of the first surface and the second surface. In a normal direction of the first surface, a thickness of the second substrate is less than a thickness of the first substrate. In order to make the above-mentioned features and advantages of the disclosure clearer and easier to understand, the following embodiments are given and described in details with accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a schematic structural diagram of an electronic device according to some embodiments of the disclosure. FIG. 2 shows a schematic structural diagram of an electronic device according to some embodiments of the disclosure. FIG. 3 shows a schematic structural diagram of an electronic device according to some embodiments of the disclosure. FIG. 4 shows a schematic diagram of viewing-angle determination according to some embodiments of the disclosure. FIG. 5 shows a light pattern distribution diagram illustrating the relationship between transmittance (opening ratio) and viewing-angle (0g) according to some embodiments of the disclosure. FIG. 6 shows a schematic structural diagram of some components of an electronic device including design parameters according to some embodiments of the disclosure. FIG. 7A to FIG. 7C show different types of light pattern diagrams according to some embodiments of the disclosure. FIG. 8 shows a schematic structural diagram of some components of an electronic device including design parameters according to some embodiments of the disclosure. FIG. 9 shows corresponding light pattern diagrams obtained by using different viewing-angle barrier layers according to some embodiments of the disclosure. FIG. 10 shows a schematic structural diagram of some components in an electronic device according to some embodiments of the disclosure. FIG. 11 shows a schematic structural diagram of some components in an electronic device according to some embodiments of the disclosure. FIG. 12A to FIG. 12C show top view schematic structural diagrams of viewing-angle barrier layers of different aspects and schematic diagrams