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US-12622160-B2 - Display device

US12622160B2US 12622160 B2US12622160 B2US 12622160B2US-12622160-B2

Abstract

A display device includes a substrate, a first light-emitting unit, and a first lens. The first light-emitting unit is disposed on the substrate and configured to emit a first light beam. The first lens is disposed on the first light-emitting unit and configured to receive at least a portion of the first light beam. In a cross-sectional view of the display device, the first light-emitting unit has a first width W 1 , the first lens has a second width W 2 , the first lens has a height L, the first lens has a radius of curvature R, a distance between the first lens and the first light-emitting unit is T, and the display device satisfies: T ( W ⁢ 2 - W ⁢ 1 ) / 2 ≤ 57.29 + 2 ⋆ ( R - L ) W 2 1 - 114.58 ⋆ ( R - L ) W 2 ; 0.1 μm≤(W 2 −W 1 )/2≤30 μm; and R≥L.

Inventors

  • Chandra LIUS

Assignees

  • Innolux Corporation

Dates

Publication Date
20260505
Application Date
20230208
Priority Date
20220329

Claims (10)

  1. 1 . A display device, comprising: a substrate; a first light-emitting unit disposed on the substrate and configured to emit a first light beam; and a first lens disposed on the first light-emitting unit and configured to receive at least a portion of the first light beam, wherein in a cross-sectional view of the display device, the first light-emitting unit has a first width W 1 , the first lens has a second width W 2 , the first lens has a height L, the first lens has a radius of curvature R, a distance between the first lens and the first light-emitting unit is T, and the display device satisfies: T ( W ⁢ 2 - W ⁢ 1 ) / 2 ≤ 57.29 + 2 ⋆ ( R - L ) W 2 1 - 114.58 ⋆ ( R - L ) W 2 ; 0.1 μm≤( W 2 −W 1)/2≤30 μm; and R≥L.
  2. 2 . The display device of claim 1 , further satisfying: 0.5 μm≤( W 2 −W 1)/2≤15 μm.
  3. 3 . The display device of claim 2 , further satisfying: 0.5 μm≤( W 2 −W 1)/2≤9.5 μm.
  4. 4 . The display device of claim 1 , further satisfying: 0 <L≤ 0.75 R.
  5. 5 . A display device, comprising: a substrate; a first light-emitting unit disposed on the substrate and configured to emit a blue light beam; a second light-emitting unit disposed on the substrate and adjacent to the first light-emitting unit, and the second light-emitting unit is configured to emit a green light beam; a third light-emitting unit disposed on the substrate and adjacent to the second light-emitting unit, and the third light-emitting unit is configured to emit a red light beam; a first lens disposed on the first light-emitting unit and configured to receive at least a portion of the blue light beam; a second lens disposed on the second light-emitting unit and configured to receive at least a portion of the green light beam; and a third lens disposed on the third light-emitting unit and configured to receive at least a portion of the red light beam, wherein a distance between the first lens and the third lens is greater than a distance between the first lens and the second lens, wherein in a cross-sectional view of the display device, the first light-emitting unit has a first width W 1 , the first lens has a second width W 2 , the first lens has a height L, the first lens has a radius of curvature R, a distance between the first lens and the first light-emitting unit is T, and the display device satisfies: T ( W ⁢ 2 - W ⁢ 1 ) / 2 ≤ 57.29 + 2 ⋆ ( R - L ) W 2 1 - 114.58 ⋆ ( R - L ) W 2 ; 0.1 μm≤( W 2 −W 1)/2≤30 μm; and R≥L.
  6. 6 . The display device of claim 5 , further satisfying: 0.5 μm≤( W 2 −W 1)/2≤15 μm.
  7. 7 . The display device of claim 6 , further satisfying: 0.5 μm≤( W 2 −W 1)/2≤9.5 μm.
  8. 8 . The display device of claim 5 , further satisfying: 0 <L≤ 0.75 R.
  9. 9 . The display device of claim 5 , wherein the second light-emitting unit has a third width W 3 , the second lens has a fourth width W 4 , the third light-emitting unit has a fifth width W 5 , the third lens has a sixth width W 6 , and the display device satisfies: | W 4 −W 3 |>|W 6 −W 5 |>|W 2 −W 1|.
  10. 10 . The display device of claim 5 , further comprising: a color filter layer disposed on the first lens, wherein the color filter layer has a seventh width W 7 , and the display device satisfies: W 7 >W 2 >W 1.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application claims the priority benefit of China application serial no. 202210317597.7, filed on Mar. 29, 2022. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification. BACKGROUND Field of the Disclosure The disclosure relates to an electronic device, in particular to a display device. Description of Related Art In a display device, a portion of the light beam is reflected, refracted, absorbed, or the like in the display device and cannot be output from the display device. Therefore, how to improve the light extraction efficiency of the display device has become one of the research and development priorities of display techniques. SUMMARY The disclosure provides a display device having good light extraction efficiency. According to an embodiment of the disclosure, a display device includes a substrate, a first light-emitting unit, and a first lens. The first light-emitting unit is disposed on the substrate and configured to emit a first light beam. The first lens is disposed on the first light-emitting unit and configured to receive at least a portion of the first light beam. In a cross-sectional view of the display device, the first light-emitting unit has a first width W1, the first lens has a second width W2, the first lens has a height L, the first lens has a radius of curvature R, a distance between the first lens and the first light-emitting unit is T, and the display device satisfies: T(W⁢2-W⁢1)/2≤57.29+2⋆(R-L)W21-114.58⋆(R-L)W2; 0.1 μm≤(W2−W1)/2≤30 μm; and R≥L. According to an embodiment of the disclosure, a display device includes a substrate, a first light-emitting unit, a second light-emitting unit, a third light-emitting unit, a first lens, a second lens, and a third lens. The first light-emitting unit is disposed on the substrate and configured to emit a blue light beam. The second light-emitting unit is disposed on the substrate and adjacent to the first light-emitting unit. The second light-emitting unit is configured to emit a green light beam. The third light-emitting unit is disposed on the substrate and adjacent to the second light-emitting unit. The third light-emitting unit is configured to emit a red light beam. The first lens is disposed on the first light-emitting unit and configured to receive at least a portion of the blue light beam. The second lens is disposed on the second light-emitting unit and configured to receive at least a portion of the green light beam. The third lens is disposed on the third light-emitting unit and configured to receive at least a portion of the red light beam. A distance between the first lens and the third lens is greater than a distance between the first lens and the second lens. In order to make the above features and advantages of the disclosure better understood, embodiments are specifically provided below with reference to figures for detailed description as follows. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the disclosure and, together with the description, serve to explain the principles of the disclosure. FIG. 1, FIG. 2, and FIG. 8 to FIG. 11 are respectively partial cross-sectional schematic diagrams of display devices according to a plurality of embodiments of the disclosure. FIG. 3 to FIG. 7 are respectively partial top schematic diagrams of display devices according to a plurality of embodiments of the disclosure. DESCRIPTION OF THE EMBODIMENTS Hereinafter, reference will be made in detail to exemplary embodiments of the disclosure, and examples of the exemplary embodiments are illustrated in the figures. Wherever possible, the same reference numerals are used in the figures and the descriptions to refer to the same or similar portions. Certain terms are used throughout the specification and the appended claims of the disclosure to refer to particular elements. Those skilled in the art should understand that electronic device manufacturers may refer to the same elements under different names. This article is not intended to distinguish between elements having the same function but different names. In the following description and claims, the words “including” and “containing” and the like are open words, so they should be interpreted as meaning “including but not limited to . . . .” The terminology mentioned in the specification, such as: “up”, “down”, “front”, “rear”, “left”, “right”, etc., are directions referring to the drawings. Therefore, the directional terms used are used for illustration, not for limiting the disclosure. In the drawings, each drawing depicts general features of methods, structures, and/or materials used in specific embodiments. However, these drawings should not be construed to define or limit the scope