Display device

Patent metadata

Field	Value
Publication number	US-10345645-B2
Application number	US-201615525859-A
Country	US
Kind code	B2
Filing date	Sep 9, 2016
Priority date	Jan 8, 2016
Publication date	Jul 9, 2019
Grant date	Jul 9, 2019

Abstract

An embodiment of the present disclosure discloses a display device which uses a black and white liquid crystal display panel, i.e., not arranging a color resistor layer formed by the color resistor material in the liquid crystal display panel, and arranging a light splitting film between a backlight panel and a liquid crystal layer. The light splitting film enables light emitted from the backlight panel to be split into light of N colors, and light of each color is projected onto a corresponding sub-pixel of the liquid crystal display panel.

First claim

The invention claimed is:

1. A display device, comprising: a backlight panel emitting white light; a black and white liquid crystal display panel located at a light exit side of the backlight panel, wherein the liquid crystal display panel comprises a first substrate and a second substrate arranged opposite to each other and a liquid crystal layer located between the first substrate and the second substrate, and the liquid crystal display panel has a plurality of pixels arranged in matrix, each pixel comprises N sub-pixels arranged in a row direction, N being an integer greater than or equal to 3; and a light splitting film located between the liquid crystal layer and the backlight panel, wherein the light emitted from the backlight panel is split into light of N colors after passing through the light splitting film, and light of each color is projected onto a corresponding sub-pixel of the liquid crystal display panel, wherein the backlight panel is an organic electroluminescent display panel, wherein the organic electroluminescent display panel has a plurality of light emitting pixels arranged in matrix, and an area corresponding to at least one column of adjacent light emitting pixels is a column area, and wherein light emitting column areas and light shielding column areas in the organic electroluminescent display panel are arranged alternately, and when performing display, light emitting pixels in the light emitting column areas emit light, and light emitting pixels in the light shielding column areas do not emit light, wherein, in the liquid crystal display panel, an area corresponding to at least one column of pixels is a monocular pixel area, and left eye pixel areas and right eye pixel areas are arranged alternately, and wherein when performing 2D display, pixels corresponding to the left eye pixel areas and pixels corresponding to the adjacent right eye pixel areas display same image information, and, when performing 3D display, the pixels corresponding to the left eye pixel areas display left eye image information, and the pixels corresponding to the right eye pixel areas display right eye image information, and wherein the light emitted by the light emitting column areas in the organic electroluminescent display panel is projected towards a direction corresponding to a human left eye via the left eye pixel areas in the liquid crystal display panel, and projected towards a direction corresponding to a human right eye via the right eye pixel areas in the liquid crystal display panel, a human eye tracking control module, wherein the human eye tracking control module is configured to control the monocular pixel area of the liquid crystal display panel to shift along a row direction based on a shift distance of a target human eye to the left or to the right, or control the column area of the organic electroluminescent display panel to shift along the row direction, wherein the human eye tracking control module comprises: a human eye tracking unit, configured to determine a calculation shift distance ΔS of the monocular pixel area in the liquid crystal display panel based on the shift distance ΔP of the target human eye to the left or to the right according to ΔS/ΔP=H/L, wherein L is a distance between the target human eye and the organic electroluminescent display panel, H is a distance between the liquid crystal layer of the liquid crystal display panel and the organic electroluminescent display panel; and a control unit, configured to control the monocular pixel area of the liquid crystal display panel to shift for a distance of integer sub-pixels along a row direction consistent with the human eye moving direction based on the determined calculation shift distance ΔS.

2. The display device as claimed in claim 1 , wherein the control unit is further configured to: calculate a shift multiple m based on the determined calculation shift distance ΔS according to m=ΔS/ΔX, wherein ΔX is a width of one column of sub-pixels in the liquid crystal display panel; control the monocular pixel area of the liquid crystal display panel to shift for a distance of m sub-pixels along the row direction if the shift multiple m is an integer; round off the shift multiple m to obtain m′ if the shift multiple m is not an integer, and control the monocular pixel area of the liquid crystal display panel to shift for a distance of m′ sub-pixels along the row direction.

3. A display device, comprising: a backlight panel emitting white light;
a black and white liquid crystal display panel located at a light exit side of the backlight panel, wherein the liquid crystal display panel comprises a first substrate and a second substrate arranged opposite to each other and a liquid crystal layer located between the first substrate and the second substrate, and the liquid crystal display panel has a plurality of pixels arranged in matrix, each pixel comprises N sub-pixels arranged in a row direction, N being an integer greater than or equal to 3; and a light splitting film located between the liquid crystal layer and the backlight panel, wherein the light emitted from the backlight panel is split into light of N colors after passing through the light splitting film, and light of each color is projected onto a corresponding sub-pixel of the liquid crystal display panel, wherein the backlight panel is an organic electroluminescent display panel, wherein the organic electroluminescent display panel has a plurality of light emitting pixels arranged in matrix, and an area corresponding to at least one column of adjacent light emitting pixels is a column area, and wherein light emitting column areas and light shielding column areas in the organic electroluminescent display panel are arranged alternately, and when performing display, light emitting pixels in the light emitting column areas emit light, and light emitting pixels in the light shielding column areas do not emit light, wherein, in the liquid crystal display panel, an area corresponding to at least one column of pixels is a monocular pixel area, and left eye pixel areas and right eye pixel areas are arranged alternately, and wherein when performing 2D display, pixels corresponding to the left eye pixel areas and pixels corresponding to the adjacent right eye pixel areas display same image information, and, when performing 3D display, the pixels corresponding to the left eye pixel areas display left eye image information, and the pixels corresponding to the right eye pixel areas display right eye image information, and wherein the light emitted by the light emitting column areas in the organic electroluminescent display panel is projected towards a direction corresponding to a human left eye via the left eye pixel areas in the liquid crystal display panel, and projected towards a direction corresponding to a human right eye via the right eye pixel areas in the liquid crystal display panel, a human eye tracking control module, wherein the human eye tracking control module is configured to control the monocular pixel area of the liquid crystal display panel to shift along a row direction based on a shift distance of a target human eye to the left or to the right, or control the column area of the organic electroluminescent display panel to shift along the row direction, wherein the human eye tracking control module comprises: a human eye tracking unit, configured to determine a calculation shift distance ΔS′ of the column area in the organic electroluminescent display panel based on the shift distance ΔP of the target human eye to the left or to the right according to ΔS′ /ΔP=H/L -H , wherein L is a distance between the target human eye and the organic electroluminescent display panel, H is a distance between the liquid crystal layer of the liquid crystal display panel and the organic electroluminescent display panel; and a control unit, configured to control the column

Assignees

• Boe Technology Group Co Ltd
• Beijing Boe Optoelectronics Tech Co Ltd
• Beijin Boe Optoelectronics Tech Co Ltd

Inventors

• Lu Pengcheng
• Dong Xue
• Chen Xiaochuan
• Zhao Wenqing
• Gao Jian
• Wang Qian
• Yang Ming
• Wang Lei
• Xu Rui
• Niu Xiaochen
• Wang Haisheng

Classifications

• G02F2201/44

  Arrangements combining different electro-active layers, e.g. electrochromic, liquid crystal or electroluminescent layers · CPC title

• G02F1/133603

  with LEDs · CPC title

• G02B27/1006

  for splitting or combining different wavelengths (G02B27/1086, G02B27/141 take precedence) · CPC title

• G02B27/1086

  operating by diffraction only · CPC title

• G02F1/13306

  Circuit arrangements or driving methods for the control of single liquid crystal cells (G02F1/132, G02F1/133382 take precedence) · CPC title