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KR-102962799-B1 - DISPLAY DEVICE AND TOUCH INPUT SYSTEM INCLUDING THE SAME

KR102962799B1KR 102962799 B1KR102962799 B1KR 102962799B1KR-102962799-B1

Abstract

A display device and a touch input system including the same are disclosed. A display device according to one embodiment includes a display portion including a plurality of light-emitting regions, a plurality of touch electrodes disposed between the plurality of light-emitting regions to detect a touch, a plurality of code patterns formed by covering a portion of the front surface of at least one of the plurality of touch electrodes with a preset code shape, and a light-blocking dummy pattern formed on the front surface of a plurality of touch electrodes where the plurality of code patterns are not formed, wherein the height or thickness of the plurality of code patterns is formed differently from the height or thickness of the light-blocking dummy pattern, so that the light-blocking rates of the plurality of code patterns and the light-blocking dummy pattern may be different from each other.

Inventors

  • 유지나
  • 김주연
  • 박원상
  • 심창우
  • 이성준

Assignees

  • 삼성디스플레이 주식회사

Dates

Publication Date
20260511
Application Date
20220114

Claims (20)

  1. A display unit including a plurality of light-emitting regions; A plurality of touch electrodes disposed between the plurality of light-emitting regions to detect touch; A plurality of code patterns formed by covering a portion of the front surface of at least one of the plurality of touch electrodes with a preset code shape; and It includes a light-blocking dummy pattern formed on the front surface of the plurality of touch electrodes where the plurality of code patterns are not formed, A display device in which the height or thickness of the plurality of code patterns is formed differently from the height or thickness of the light-blocking dummy pattern, and the light-blocking rates of the plurality of code patterns and the light-blocking dummy pattern are different from each other.
  2. In Article 1, The above plurality of touch electrodes It includes a plurality of driving electrodes, a plurality of sensing electrodes, and a plurality of dummy electrodes, A display device formed with a mesh structure that surrounds both the spaces between and the periphery of the plurality of light-emitting regions, comprising a plurality of driving electrodes, the plurality of sensing electrodes, and the plurality of dummy electrodes.
  3. In Article 2, The planar shape of the above plurality of code patterns is A display device formed with at least one closed loop shape among a rectangle, a square, a circle, and a rhombus, an open loop shape that partially surrounds at least one of the plurality of light-emitting regions, and a straight line shape of a preset length.
  4. In Paragraph 3, The above plurality of code patterns and the above plurality of light-blocking dummy patterns are A display device comprising an inorganic or organic black pigment that absorbs infrared or ultraviolet rays, and formed by patterning to cover a portion of the front and a portion of the side of at least one touch electrode so as not to overlap each other.
  5. In Paragraph 3, The above dummy pattern for light shielding is A display device formed in a mesh shape that surrounds both the spaces between and the perimeter of the plurality of light-emitting regions so as not to overlap with the plurality of code patterns.
  6. In Paragraph 3, The above plurality of code patterns are A display device formed with a height or thickness greater than the height or thickness of the light-blocking dummy pattern, and having inclined surfaces of a preset slope formed on the sides and front of the plurality of code patterns.
  7. In Article 6, The above-mentioned dummy pattern for light shielding has an inclined surface formed on at least one side and a flat front surface, and The above-mentioned plurality of code patterns is a display device having a first inclined surface with a first slope formed on the front surface and a second inclined surface with a second slope different from the first slope formed on at least one side surface.
  8. In Article 7, The above plurality of code patterns are A display device having a first inclined surface of the first slope and a second inclined surface of the second slope formed to have a higher diffuse reflectance than the diffuse reflectance of the light-blocking dummy pattern.
  9. In Paragraph 3, The widths of the light-blocking dummy pattern and the code pattern are the same as each other, and the light-blocking dummy pattern is formed with a first thickness or a first height, and A display device in which the above plurality of code patterns are formed with a second thickness or second height that is thicker or higher than a first thickness or first height, and have a greater light blocking rate than the light-blocking dummy pattern, and are recognized as code shapes and patterns by a touch input device.
  10. In Article 9, At least one side of the plurality of code patterns is formed to have an inclined surface with a first slope with respect to a plane, and A display device formed such that the front surface of the plurality of code patterns has a second slope different from the first slope based on a plane.
  11. In Article 9, The above plurality of code patterns are It has a side slope of a first slope and a front slope of a second slope different from the first slope, A display device that reduces the amount of infrared light reflected to the touch input device by refracting and diffusely reflecting infrared light incident from the front direction of the plurality of code patterns in the lateral direction.
  12. In Article 11, A display device formed of a transparent or semi-transparent light-blocking member comprising a transparent or semi-transparent pigment, wherein the plurality of code patterns and the light-blocking dummy patterns are the above.
  13. In Article 11, The above display part A display device further comprising a plurality of color filter layers formed by directly covering the plurality of code patterns and the light-blocking dummy patterns on the plurality of code patterns and the light-blocking dummy patterns.
  14. A display device for displaying images; and It includes a touch input device for inputting touch to the above-mentioned display device, and The above display device is, A display unit including a plurality of light-emitting regions; A plurality of touch electrodes disposed between the plurality of light-emitting regions to detect touch; A plurality of code patterns formed by covering a portion of the front surface of at least one of the plurality of touch electrodes with a preset code shape; and It includes a light-blocking dummy pattern formed on the front surface of the plurality of touch electrodes where the plurality of code patterns are not formed, A touch input system in which the height or thickness of the plurality of code patterns is formed differently from the height or thickness of the light-blocking dummy pattern, and the light-blocking rates of the plurality of code patterns and the light-blocking dummy pattern are different from each other.
  15. In Article 14, The above plurality of touch electrodes It includes a plurality of driving electrodes, a plurality of sensing electrodes, and a plurality of dummy electrodes, A touch input system in which a plurality of driving electrodes, the plurality of sensing electrodes, and the plurality of dummy electrodes are formed into a mesh structure that surrounds both the spaces between and the periphery of the plurality of light-emitting regions.
  16. In Article 15, The widths of the light-blocking dummy pattern and the code pattern are the same as each other, and the light-blocking dummy pattern is formed with a first thickness or a first height, and A touch input system in which the above plurality of code patterns are formed with a second thickness or second height that is thicker or higher than a first thickness or first height, and have a greater light blocking rate than the light-blocking dummy pattern, and are recognized as code shapes and patterns by a touch input device.
  17. In Article 15, At least one side of the plurality of code patterns is formed to have an inclined surface with a first slope with respect to a plane, and A touch input system in which the front surface of the plurality of code patterns is formed to have a slope surface with a second slope different from the first slope based on a plane.
  18. In Article 15, The above plurality of code patterns are It has a side slope of a first slope and a front slope of a second slope different from the first slope, A touch input system that reduces the amount of infrared light reflected to the touch input device by refracting and diffusely reflecting infrared light incident from the front direction of the plurality of code patterns in the lateral direction.
  19. In Article 18, A touch input system in which the above plurality of code patterns and the above light-blocking dummy patterns are formed from a transparent or semi-transparent light-blocking member comprising a transparent or semi-transparent pigment.
  20. In Article 18, The above display part A touch input system further comprising a plurality of color filter layers formed by directly covering the plurality of code patterns and the light-blocking dummy patterns on the plurality of code patterns and the light-blocking dummy patterns.

Description

Display device and touch input system including the same The present invention relates to a display device and a touch input system including the same. As the information society develops, the demand for display devices for displaying images is increasing in various forms. For example, display devices are being applied to a wide range of electronic devices, such as smartphones, digital cameras, laptop computers, navigation systems, and smart televisions. Display devices may be flat panel display devices, such as Liquid Crystal Display Devices, Field Emission Display Devices, and Organic Light Emitting Display Devices. Among these flat panel display devices, light-emitting display devices include light-emitting elements in which each pixel of the display panel can emit light independently, thereby enabling the display of images without a backlight unit that provides light to the display panel. Recent display devices support touch input using parts of the user's body (e.g., fingers) and touch input using an electronic pen. By detecting touch input using an electronic pen, the display device can detect touch input more precisely than when using only touch input using parts of the user's body. FIG. 1 is a configuration diagram showing a touch input system according to one embodiment of the present invention. FIG. 2 is a configuration block diagram specifically showing the touch input device and display device illustrated in FIG. 1. FIG. 3 is a perspective view specifically showing the configuration of the display device illustrated in FIG. 2. FIG. 4 is a cross-sectional view specifically showing the configuration of the display device illustrated in FIG. 2. FIG. 5 is a plan view showing a display portion of a display device according to one embodiment. FIG. 6 is a plan view showing a touch sensing part of a display device according to one embodiment. Figure 7 is an enlarged view showing the code patterns and light-blocking patterns formed in the A1 area of Figure 6. FIG. 8 is an enlarged view specifically showing an A1 area in which code patterns and light-blocking patterns are arranged according to one embodiment. FIG. 9 is an enlarged view specifically showing the code patterns and light-blocking patterns of the B1 region illustrated in FIG. 6. FIG. 10 is a cross-sectional view specifically illustrating the I-I' cross-sectional structure of FIG. 9 according to one embodiment. FIG. 11 is a cross-sectional view showing the II' cross-sectional structure of FIG. 10 in a simplified block format. FIG. 12 is a process cross-sectional view showing a method for manufacturing code patterns and light-shielding patterns as illustrated in FIG. 10 and FIG. 11. FIG. 13 is a process cross-sectional view showing the patterning method of the code patterns and light-shielding patterns shown in FIG. 11 and FIG. 12. FIG. 14 is a cross-sectional view specifically showing code patterns and light-blocking patterns according to another embodiment. FIG. 15 is an enlarged cross-sectional view showing the cross-sectional structure of the code pattern illustrated in area C1 of FIG. 14. FIG. 16 is a process cross-sectional view showing the method of manufacturing the code patterns and light-blocking patterns illustrated in FIG. 14. FIG. 17 is a cross-sectional view of a process showing the patterning method of the code patterns and light-blocking patterns illustrated in FIG. 16. FIG. 18 is a cross-sectional view specifically showing code patterns and light-blocking patterns according to another embodiment. FIG. 19 is a process cross-sectional view showing the code patterns and light-shielding pattern manufacturing method shown in FIG. 18. FIG. 20 is a cross-sectional view of a process showing the patterning method of the code patterns and light-blocking patterns illustrated in FIG. 18. FIG. 21 is an enlarged view showing the planar arrangement structure of the code patterns and light-blocking patterns illustrated in FIG. 18 and FIG. 20. FIG. 22 is a cross-sectional view specifically illustrating the I-I' cross-sectional structure of FIG. 9 according to another embodiment. FIGS. 23 and FIGS. 24 are perspective views showing a display device according to another embodiment of the present invention. FIGS. 25 and FIGS. 26 are perspective views showing a display device according to another embodiment of the present invention. The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. When elements or layers are referred to a