Display device and pen touch system
AssigneeLG Display Co., Ltd.
InventorsJae Ho Lee, Jisu Yoon, DongRyul Jung
Life of this patent
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Abstract
A display device including a display panel comprises a transmissive area and a non-transmissive area, the display panel including: a first substrate, a pixel array layer located on the first substrate and including a plurality of subpixels and a plurality of signal lines in the non-transmissive area, and a code pattern layer including a plurality of code points in the non-transmissive area but not the transmissive area and a photoactive material that is responsive to light having a second wavelength that is different from the first wavelength.
Claims20
A display device comprising:
- a display panel configured to display an image, the display panel comprising:
- a first substrate comprising a transmissive area that allows light having a first wavelength to transmit through the transmissive area from a back surface of the display panel to a front surface of the display panel and a non-transmissive area that is different from the transmissive area;
- a pixel array layer in the non-transmissive area, the pixel array layer comprising a plurality of subpixels and a plurality of signal lines;
- and
- a code pattern layer including a plurality of code points in the non-transmissive area but not the transmissive area and a photoactive material that is responsive to light having a second wavelength that is different from the first wavelength,
- wherein the light having the second wavelength is incident on the display device from outside of the display device.
A pen touching system, comprising:
- a display panel comprising a pixel array layer including a plurality of subpixels that emit light having a first wavelength and a code pattern layer that overlaps the pixel array layer, the code pattern layer including a photoactive material that is responsive to light having a second wavelength that is different from the first wavelength and a plurality of data cell areas that each include a different pattern of code points;
- and
- a pen configured to output the light having the second wavelength to the display panel and sense its location according to a pattern of light received from the display panel, the pattern of light received responsive to the light outputted by the pen interacting with the code pattern layer,
- wherein the display panel includes a transmissive area allowing light having a first wavelength to transmit through the transmissive area from a back surface of the display panel to a front surface of the display panel, and a non-transmissive area different from the transmissive area, the code pattern layer including a different pattern of code points in the non-transmissive area but not in the transmissive area.
Dependencies are inferred from the claim text.