WO2019227967A1 - 显示装置、自动调节显示屏亮度的方法及终端设备 - Google Patents

显示装置、自动调节显示屏亮度的方法及终端设备 Download PDF

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Publication number
WO2019227967A1
WO2019227967A1 PCT/CN2019/074609 CN2019074609W WO2019227967A1 WO 2019227967 A1 WO2019227967 A1 WO 2019227967A1 CN 2019074609 W CN2019074609 W CN 2019074609W WO 2019227967 A1 WO2019227967 A1 WO 2019227967A1
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WIPO (PCT)
Prior art keywords
light
display
layer
photoelectric sensor
ambient light
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PCT/CN2019/074609
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English (en)
French (fr)
Inventor
孙艳六
孙阔
谢明哲
刘飞
Original Assignee
京东方科技集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US16/490,620 priority Critical patent/US11361730B2/en
Priority to EP19750046.5A priority patent/EP3806084A4/en
Priority to JP2019547309A priority patent/JP7408394B2/ja
Publication of WO2019227967A1 publication Critical patent/WO2019227967A1/zh
Priority to JP2023212635A priority patent/JP2024041763A/ja

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/10—Intensity circuits
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/13—Active-matrix OLED [AMOLED] displays comprising photosensors that control luminance
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/141—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light conveying information used for selecting or modulating the light emitting or modulating element
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/144—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light being ambient light
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/145—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen
    • G09G2360/147—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen the originated light output being determined for each pixel
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays

Definitions

  • Embodiments of the present disclosure relate to a display device, a method for automatically adjusting a display screen brightness of a display device, and a terminal device for performing the method for automatically adjusting a display screen brightness of the display device.
  • Ambient light detection devices are usually located in the visible area (ie, View Area) or black matrix (BM) area of the display panel, where the BM area usually refers to the non-display area, that is, the AA area, which is also the border around the operation area. region.
  • the ambient light detection device needs to additionally occupy a corresponding area of the display panel, which is not conducive to the realization of a borderless screen.
  • An embodiment of the present disclosure provides a display device.
  • the display device integrates an ambient light detection device in a visible area, which facilitates the realization of a borderless screen.
  • An embodiment of the present disclosure also provides a method for automatically adjusting the brightness of a display screen of a display device.
  • An embodiment of the present disclosure also provides a terminal device for performing the above-mentioned method for automatically adjusting the brightness of a display screen of a display device.
  • the display device includes: an ambient light detection device including a light shielding layer and a photoelectric sensor; a display component; and a control device, the display component includes : A back plate component, the light shielding layer is provided in the back plate component, and the light shielding layer is provided with a light through hole suitable for the ambient light to pass through; the photoelectric sensor is provided at the lower part of the back plate component; Configured to detect a change in the ambient light; a display screen, which is disposed above the backplane component; a display chip, which is connected to the display screen.
  • the control device is connected to the photosensor to receive and process the light signals sensed by the photosensor, and the display chip is connected to the control device to adjust the brightness of the display screen according to the change of the ambient light .
  • the backplane assembly includes a substrate, the light-shielding layer is provided on an upper surface of the substrate, the photosensor is provided on a lower portion of the substrate, and a light-emitting layer provided on the light-shielding layer.
  • a light-passing hole is configured such that the light emitted by the light-emitting layer is not reflected by the cathode to the photo sensor after being reflected by the cathode, so as to eliminate the light emitted by the light-emitting layer from affecting the light-emitting layer. Interference from ambient light.
  • the reflected light that intersects the light-shielding layer at the periphery of the light-passing hole passes through the reflected light and the light-shielding layer.
  • the intersection of the layers is a vertical line perpendicular to the plane where the light shielding layer is located, and the angle between the vertical line and the reflected light is greater than about 30 °.
  • the back plate assembly further includes a back film provided on a lower surface of the substrate, the photo sensor provided on a lower portion of the back film, and a thin film transistor layer provided on the lower film. Between the light-shielding layer and the anode.
  • the ambient light detection device further includes a low-refractive index layer disposed between the photosensor and the substrate, and the low-refractive index layer is configured to allow the ambient light to pass through And when the light emitted from the light emitting layer is directed toward the low refractive index layer, total reflection occurs.
  • the low refractive index layer is a silicon dioxide layer, or a cavity is bound between the substrate and the photosensor, and the low refractive index layer is an air layer.
  • the light through hole is a through hole penetrating the light shielding layer in a thickness direction, and the through hole is configured as a circle or a polygon.
  • the light-passing holes include a plurality of light-passing holes arranged in an array, and a maximum radial dimension of the light-passing holes is about 5 ⁇ m to about 15 ⁇ m.
  • the thickness of the light emitting layer is about 1 ⁇ m or less.
  • the display device further includes a protective layer, a packaging layer, and a pixel defining layer.
  • the protective layer is disposed on the upper portion of the ambient light detection device, the encapsulation layer is disposed above the cathode layer, and the pixel defining layer is disposed on the same layer as the anode layer.
  • a method for automatically adjusting the brightness of a display screen of the display device including: the photoelectric sensor senses ambient light, and the control device receives a light signal sensed by the photoelectric sensor And comparing the light signal with a signal stored in the display chip; judging whether the irradiation intensity of the ambient light reaches an adjustment threshold; if so, the control device sends an adjustment signal to the display chip, The display chip adjusts the driving current of the display screen to change the brightness of the display screen, and the photo sensor continues to sense ambient light; and if not, returns to the photo sensor continues to sense ambient light.
  • a terminal device configured to perform a method for adjusting a display screen brightness of the display device, the terminal device including: a photoelectric sensor, a display component, and a control device.
  • the photoelectric sensor and the display component are both electrically connected to the control device, and the display component includes a display chip and a display screen.
  • the photoelectric sensor is configured to sense ambient light and obtain a light signal; the control device is configured to compare a light signal sensed by the photoelectric sensor with a signal stored in the display chip, and determine the ambient light Whether the intensity of the irradiation reaches an adjustment threshold, and if so, send an adjustment signal to the display chip; and the display chip configured to adjust a driving current of the display screen according to the adjustment signal to change the brightness of the display screen .
  • the photoelectric sensor is electrically connected to the control device through the sensor flexible circuit board and the display component through the display flexible circuit board.
  • FIG. 1 is a schematic diagram of a display device according to an embodiment of the present disclosure
  • FIG. 2 is another schematic diagram of a display device according to an embodiment of the present disclosure.
  • FIG. 3 is another schematic diagram of a display device according to an embodiment of the present disclosure, in which an arrow in the figure indicates a propagation direction of light emitted by a light emitting layer;
  • FIG. 4 is another schematic diagram of a display device according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic diagram of a light path propagation of light emitted by a light emitting layer in a display device according to an embodiment of the present disclosure
  • FIG. 6 is a schematic diagram of a display device according to an embodiment of the present disclosure, in which another embodiment of an ambient light detection device is shown;
  • FIG. 7 is a schematic diagram of the display device in FIG. 6;
  • FIG. 8 shows the light energy sensed by the photoelectric sensor in a bright state of a display device according to an embodiment of the present disclosure
  • FIG. 9 shows the light energy sensed by the photoelectric sensor in a slightly dark state (for example, turning off some lights) of the display device according to an embodiment of the present disclosure
  • FIG. 10 shows that a display device according to an embodiment of the present disclosure senses the light sensor in a slightly dark indoor state (for example, a part of lights are turned off) and in a white paper cover state (that is, the white paper is covered in front of the display screen).
  • a slightly dark indoor state for example, a part of lights are turned off
  • a white paper cover state that is, the white paper is covered in front of the display screen.
  • FIG. 11 shows the light energy sensed by the photoelectric sensor when the display device according to an embodiment of the present disclosure is in an indoor light-off state
  • FIG. 12 is a flowchart of a method for adjusting a display screen brightness of a display device according to an embodiment of the present disclosure
  • FIG. 13 is a schematic block diagram of a terminal device according to an embodiment of the present disclosure.
  • FIG. 14 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure.
  • FIG. 15 is a flowchart of the operation of the control device according to the embodiment of the present disclosure.
  • a display device 100 according to an embodiment of the present disclosure is described below with reference to the drawings.
  • an ambient light detection device 1 is integrated in an operable area of the display device 100.
  • the ambient light detection device 1 can reduce the occupation of the border area around the operable area, thereby facilitating the realization of a full borderless screen.
  • the ambient light detection device 1 may include a light shielding layer 11 and a photosensor 12.
  • the light-shielding layer 11 may be a metal layer, such as a molybdenum layer, a titanium layer, or a silver layer.
  • the thickness of the light-shielding layer 11 may be adaptively set according to actual needs.
  • the display device 100 includes a display assembly 2 and a control device 3.
  • the display component 2 includes a back plate component 21, a display screen 22, and a display chip.
  • the light shielding layer 11 of the ambient light detection device 1 may be disposed in the back plate assembly 21.
  • the back plate assembly 21 has a multi-layer structure, and the light-shielding layer 11 belongs to one of the multi-layer structures; and the light-shielding layer 11 is provided with a light-through hole 111, which is suitable for the ambient light 4 to pass through.
  • a setting is conducive to the accurate detection of ambient light and improves the performance of the display device 100.
  • the display screen 22 is provided above the back plate assembly 21, and the display chip is connected to the display screen 22.
  • the display chip can be arranged in a selected position.
  • the photoelectric sensor 12 is provided at the bottom of the back plate assembly 21 for detecting the ambient light 4. Transformation.
  • the transformation here refers to, for example, a change in sensor photocurrent caused by ambient light.
  • the control device 3 is connected to the photosensor 12 for receiving and processing the light signals sensed by the photosensor 12.
  • the display chip is connected to the control device 3 to adjust the brightness of the display screen 22 according to the change of the ambient light 4. Therefore, by integrating the ambient light detection device 1 in the operable area of the display device 100, it is beneficial to reduce the occupation of other areas of the display device 100 by the ambient light detection device 1, and thus facilitate the realization of a full screen.
  • the control device 3 can receive and process the optical signal sensed by the photoelectric sensor 12, and connect the optical signal with the signal stored in the display chip.
  • the display chip can adjust the brightness of the display screen 22 according to the change of the ambient light 4, which can not only save power, but also improve user comfort.
  • control device 3 generally includes a digital signal processing chip (DSP), a printed circuit board (PCB), a CPU, and a display chip (IC).
  • DSP digital signal processing chip
  • PCB printed circuit board
  • CPU central processing unit
  • IC display chip
  • the photoelectric sensor senses the ambient light signal, and the ambient light signal is processed by DSP (generally, the fuzzification is interpolated here).
  • the processed data is sent to the CPU through the PCB, which is judged and displayed by the CPU. Whether the brightness (or grayscale) of the screen needs to be adjusted. If the threshold is not reached, no adjustment is required, and the operation is interrupted. If the threshold is reached, adjustment is required, the adjustment ratio is calculated, and the adjustment data is sent to the display chip (IC). Overlay the adjustment data with the DATA of the display data, and then send it to the display for display. For example, it may also include: European and grayscale control signals and display raw data (RAW), and transmit the final display data for display.
  • European and grayscale control signals and display raw data (RAW) and transmit the final display data for display.
  • the DSP is used as a digital signal processing chip, and the digital signal processing chip may be included in the CMOS.
  • the DSP framework includes an ISP (Signal Processor).
  • the DSP framework may also include a JPEG encoder.
  • the display device 100 by integrating the ambient light detection device 1 in the operable area of the display device 100, compared with the prior art, it is beneficial to save screen space and increase screen ratio.
  • the display device 100 can adjust the brightness of the display screen 22 according to the change of the ambient light 4 to improve the comfort of the user and save energy.
  • the back plate assembly 21 includes a substrate 211, a light emitting layer 212, an anode 213, and a cathode 214.
  • the light-shielding layer 11 is provided on the upper surface of the substrate 211, and the photosensor 12 is provided on the bottom of the substrate 211.
  • the photosensor 12 can be used to detect the change of the ambient light 4.
  • the light-emitting layer 212 is provided above the light-shielding layer 11.
  • the anode 213 is provided to emit light.
  • a lower surface of the layer 212; a cathode 214 (for example, a metal cathode) is disposed on an upper surface of the light emitting layer 212.
  • the light-emitting layer 212 may be an organic light-emitting layer (ie, EL, Emitting Layer).
  • the light-passing hole 111 is configured so that the light emitted by the light-emitting layer 212 is not reflected by the light-emitting hole 111 toward the photoelectric sensor 12 after being reflected by the cathode 214.
  • the interference of the light emitted from the light emitting layer 212 on the ambient light 4 is eliminated. In this way, it is beneficial to avoid interference of the light emitted from the light-emitting layer 212 on the ambient light 4, so that the ambient light detection is accurate.
  • the light-shielding layer 11 can block a part of the light, for example, the light-shielding layer 11 can block the light emitted by the light-emitting layer 212, which is beneficial to reducing the interference of the light emitted by the light-emitting layer 212 on the ambient light 4, improving the detection accuracy of the photoelectric sensor 12,
  • the brightness of the display screen 22 is adaptively adjusted by the display chip.
  • the light through hole 111 is a through hole penetrating the light shielding layer 11 in the thickness direction, and the through hole is configured as a circle or a polygon. Therefore, it is beneficial to increase the light transmittance, and can also avoid the interference of the light emitted by the light emitting layer 212 on the ambient light 4, so that the ambient light detection is accurate.
  • the light-through holes 111 include a plurality of light-through holes 111, and the plurality of light-through holes 111 may be arranged in an array. Therefore, it is more beneficial to increase the light transmittance, and also to avoid the interference of the light emitted by the light-emitting layer 212 on the ambient light 4, so that the ambient light detection is accurate and the brightness of the screen is better adjusted.
  • the density of the light-passing holes 111 can be increased as much as possible.
  • a light-through hole 111 may be made next to each sub-pixel. Designing the ambient light detection device 1 in an operable area can increase the area of the display screen 22 and achieve a larger screen ratio.
  • the operable area may be provided in the display area.
  • a hole array can be formed on the full screen, or a hole or a hole array can be formed on a certain area of the screen. If it is made in full screen, the full screen can be called the operating area. If it is only made locally, because the sensor is relatively small, the sensor needs to be placed in the area where the hole array is made to achieve the effect. Therefore, this local area can be called an accessible area. Operating area.
  • the ambient light detection device 1 by integrating the ambient light detection device 1 into the operable area and automatically adjusting the screen brightness according to the ambient light, it can save extra space, increase the screen area, increase the screen ratio, and facilitate the realization of a full screen.
  • the fingerprint identification process can refer to the conventional fingerprint identification method, which will not be repeated here.
  • the maximum radial dimension of the light-passing hole 111 is about 5 ⁇ m to about 15 ⁇ m. Therefore, by setting the maximum radial dimension of the light-passing hole 111 in a range of about 5 ⁇ m to about 15 ⁇ m, it is more conducive to increasing the light transmittance and also to avoid interference of the light emitted by the light-emitting layer 212 on the ambient light 4. To make the ambient light detection accurate.
  • the maximum radial dimension of the light-passing hole 111 may be, for example, about 5 m, about 8 m, about 10 m, or about 15 m, and the like.
  • the maximum radial size of the through-hole 111 refers to the diameter of the round hole; when the through-hole 111 is a polygonal hole, the through-hole 111
  • the maximum radial dimension refers to the diameter of the circumscribed circle of the light-passing hole 111
  • the minimum radial dimension of the light-passing hole 111 refers to the diameter of the inscribed circle of the light-passing hole 111, which is possible for those skilled in the art. Understand.
  • the thickness of the light emitting layer 212 may be less than about 1 ⁇ m. Therefore, the structure of the display device 100 is made thinner and more compact.
  • the display device 100 further includes a protective layer 5 (such as a protective glass cover, etc.), an encapsulating layer 6 and a pixel defining layer 7.
  • a protective layer 5 such as a protective glass cover, etc.
  • the protective layer 5 may be disposed on the outermost side of the display screen, and the protective layer 5 passes through the protective layer 5.
  • the display screen and the ambient light detection device 1 can be protected to a certain extent, which is helpful to ensure the accuracy of the ambient light detection and extend the service life of the display device 100.
  • the encapsulation layer 6 may be disposed above the cathode 214, and the pixel defining layer 7 and the anode 213 may be located on the same layer.
  • the display device may further include a polarizer 23 and a touch screen 24.
  • the touch screen 24 can be adhered to the encapsulation layer 6 through optical glue.
  • the protective layer 5 may be provided on the polarizer 23.
  • the backplane assembly 21 further includes a back film 215 and a thin film transistor layer 216.
  • the back film 215 is disposed on the lower surface of the substrate 211, and the photosensor 12 is disposed on the bottom of the back film 215.
  • the back film 215 may be glass or a thermoplastic polyester PET (polythylene terephthalate) or the like.
  • the thin film transistor layer 216 may be disposed between the light shielding layer 11 and the anode 213.
  • the display chip is connected to the thin film transistor layer 216, and the brightness and darkness of each pixel can be adjusted by the display chip.
  • the intersection of the over-reflected light and the light-shielding layer 11 is a vertical line perpendicular to the plane where the light-shielding layer 11 is located, and the angle between the vertical line and the reflected light is greater than about 30 °. This is more conducive to avoiding the interference of the light emitted by the light-emitting layer 212 on the ambient light 4, so that the ambient light detection is accurate.
  • the light emitted by the light-emitting layer 212 has an intersection with the cathode 214 and is reflected to the light-shielding layer 11 through the intersection.
  • the projection of the light-through hole 111 on the light-shielding layer 11 is circular. It has an end point, connecting the intersection point and the end point to form a first connection line, and forming a second connection line through the end point perpendicular to the plane where the light shielding layer 11 is located, the first connection line and the second connection line.
  • the angle between the lines is greater than about 30 °.
  • a point on the edge of the upper surface of the light-emitting layer 212 is A1
  • a point on the edge of the lower surface of the light-emitting layer 212 is A3, which is located between the upper surface and the lower surface of the light-emitting layer 212.
  • a point at the edge is A2, and the endpoint includes a first endpoint B1 and a second endpoint B2.
  • a perpendicular line passing through the first end point B1 and perpendicular to the plane where the light shielding layer 11 is located has a first intersection point with the cathode 214, and the first The included angle ⁇ A1B101, or ⁇ 1 , is greater than about 30 °.
  • the intersection point also includes a second intersection point O2, a third intersection point O3, and a fourth intersection point O4. If the light emitted by the A2 point is emitted from the first endpoint B1 through the second intersection point O2, the second The included angle ⁇ O2B1O1, or ⁇ 2 , is greater than about 30 °.
  • the vertical line passing through the second endpoint B2 and the cathode 214 have a fourth intersection point O4, and a third angle ⁇ O3B2O4 is larger than, or ⁇ 3 , about 30 °.
  • the ambient light 4 enters the photo sensor 12 through the light hole 111, and the photo sensor 12 detects the integrated photosensitive energy.
  • the control device 3 is respectively connected to the photo sensor 12 and the display chip.
  • the control device 3 determines the Strong or weak, the brightness of the display screen 22 is automatically adjusted by the display chip.
  • the light through hole 111 can shield the display device 100, such as an organic light-emitting diode (OLED) internal light-emitting layer 212, to prevent the stray light inside the display device 100 from interfering with the detection of the photoelectric sensor 12. This caused misjudgment.
  • OLED organic light-emitting diode
  • the included angles ⁇ 1 , ⁇ 2 , and ⁇ 3 are all required to be greater than about 30 °, such as 38 °, etc. , Where ⁇ 1 , ⁇ 2 , ⁇ 3 satisfy:
  • A refers to the vertical distance between the second light emitting point and the intersection of the reflected light and the light shielding layer
  • B refers to the vertical distance between the first light emitting point and the intersection of the light or reflected light and the light shielding layer
  • E refers to the lower surface of the reflective layer
  • F refers to the vertical distance between the lower surface of the light-emitting layer and the upper surface of the light-shielding layer.
  • the thickness of the light-emitting layer 212 shown in FIG. 3 to FIG. 5 is very thin.
  • the structure of the light-emitting layer 212 and part of the light are schematically drawn in the figure.
  • the ambient light detection device 1 may further include a low refractive index layer 13.
  • the ambient light detection device 1 may further include a low-refractive index layer 13, which is disposed between the photosensor 12 and the substrate 211, and the low-refractive index layer 13 is configured.
  • the ambient light is allowed to pass through, and the light emitted from the light emitting layer 212 is totally reflected when the light is emitted toward the low refractive index layer 13.
  • a back film 215 is provided on the lower surface of the substrate 211, and the low refractive index layer 13 may be provided between the photosensor 12 and the back film 215.
  • the low refractive index layer 13 may be a silicon dioxide layer, or an adhesive layer between the substrate 211 and the photosensor 12.
  • a cavity may be defined between the substrate 211 and the photosensor 12, and the low refractive index layer 13 may be an air layer.
  • the form of the low-refractive-index layer 13 can be selected as required.
  • the light-emitting layer 212 After a part of the light emitted from the light-emitting layer 212 is reflected by the cathode 214, if any light is incident on the photo sensor 12 through the light-passing hole 111, the light can be totally reflected by the low-refractive index layer 13 at this time, so that It is beneficial to further reduce the interference of the light emitted from the light-emitting layer 212 on the ambient light 4 and is more conducive to the accurate detection of the ambient light.
  • the light emitted by the light-emitting layer 212 can be totally reflected when it is incident on the photoelectric sensor 12 through the light-passing hole 111.
  • the ambient light 4 is directed to the low-refractive index layer 13 through the light-passing hole 111 Total reflection does not occur at this time, so the low refractive index layer 13 has almost no effect on the ambient light 4.
  • the ambient light 4 can still penetrate the low-refractive index layer 13 to reach the surface of the photosensor 12, but the self-luminescence inside the display device 100 will also have internal reflection, and most of it will be shielded by the light shielding layer 11 without causing interference. Even if part of the light emitted by the light-emitting layer 212 enters the light-passing hole 111 of the light-shielding layer 11, its incident angle will be relatively large, and full emission will occur in the low reflectance layer 13, and it will not reach the surface of the photoelectric sensor 12. Basically, the ambient light 4 detected by the sensor 12 can make the detection accurate, so that the brightness of the display screen 22 can be changed according to the change of the ambient light brightness without being affected by the display screen of the display device.
  • FIG. 8 it is the light energy sensed by the photoelectric sensor 12 when the room is bright.
  • FIG. 9 and FIG. 10 it is the light energy sensed by the photoelectric sensor 12 when the room is slightly dark; as shown in FIG. 11. Indicates that it is the light energy induced when the lights are turned off in the room; all tests are performed in the point-on-screen state (that is, the state where the display screen is lit). It can be clearly seen that with the change of ambient light 4, the photoelectric sensor 12 The sensed light energy also changes accordingly, and there is no interference with the ambient light 4 when the display screen is on.
  • a method for automatically adjusting the display screen brightness of the display device is also provided.
  • the photoelectric sensor senses ambient light
  • the control device receives a light signal sensed by the photoelectric sensor, and compares the light signal with a signal stored in the display chip, and the control device determines the ambient light Whether the irradiation intensity of ⁇ reaches an adjustment threshold (the adjustment threshold can be set adaptively). If yes, the control device sends an adjustment signal to the display chip, and the driving current of the display screen is adjusted by the display chip to change the brightness of the display screen, and the photoelectric sensor continues to sense ambient light; if No, return to the ambient light being continuously sensed by the photoelectric sensor. Therefore, the brightness of the display screen can be automatically adjusted according to the change of the ambient light, and it is beneficial to avoid the interference of the ambient light with the light emitted by the light-emitting layer itself, so that the ambient light detection is accurate.
  • the light signal there is a corresponding relationship between the light signal and the signal stored in the display chip. If the light signal does not match the signal stored in the display chip, it can be determined at this time that the irradiation intensity of the ambient light reaches an adjustment threshold. .
  • control device and the photoelectric sensor may be independently set.
  • control device may also be integrated with a comparison module and an analysis module of the photoelectric sensor.
  • a terminal device 200 is further provided.
  • the terminal device 200 is configured to perform the method for displaying a display screen brightness of the display device described above.
  • the terminal device 200 includes a photoelectric sensor 210, a display component 230, and a control device 220.
  • the display component 230 includes a display chip 231 and a display screen 232.
  • the photoelectric sensor 210 is electrically connected to the control device 220 through a display FPC through a sensor flexible circuit board (FPC) 218 and a display component 230 including a display chip 231 and a display screen 232.
  • FPC sensor flexible circuit board
  • the photoelectric sensor 210 is configured to sense ambient light and obtain a light signal; the control device 220 is configured to compare the light signal sensed by the photoelectric sensor 210 with a signal stored in the display chip 231, and determine whether the ambient light irradiation intensity The adjustment threshold is reached, and if so, an adjustment signal is sent to the display chip 231; the display chip 231 is configured to adjust the driving current of the display screen 232 to change the brightness of the display screen 232 according to the adjustment signal.
  • the brightness of the display screen 232 can be adaptively adjusted according to the conversion of ambient light, which is beneficial to improving the user's comfort experience.
  • the description with reference to the terms “one embodiment”, “some embodiments”, “examples”, or “some examples” and the like means the features, structures, materials, or characteristics described in conjunction with the embodiments or examples Included in at least one embodiment or example of the present disclosure.
  • the schematic expressions of the above terms are not necessarily directed to the same embodiment or example.
  • the described features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
  • a person of ordinary skill in the art may combine and combine different embodiments or examples and features of the different embodiments or examples described in this specification.

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Abstract

一种显示装置(100)、自动调节显示屏亮度的方法及终端设备(200)，显示装置(100)的可操作区内集成有环境光侦测装置(1)，环境光侦测装置(1)包括遮光层(11)和光电传感器(12)，显示装置(100)包括显示组件(2)和控制装置(220)，显示组件(2)包括：背板组件(21)，遮光层(11)设于背板组件(21)内，且遮光层(11)上设有适于环境光(4)通过的通光孔(111)，光电传感器(12)设于背板组件(21)的底部；显示屏(22)，设于背板组件(21)的上方；显示芯片(231)，与显示屏(22)相连；控制装置(220)与光电传感器相连并且配置来接收并处理光电传感器(12)感应到的光信号，显示芯片(231)与控制装置(220)相连以根据环境光的变换调节显示屏(22)的亮度。

Description

显示装置、自动调节显示屏亮度的方法及终端设备
相关申请的交叉引用
本申请要求于2018年05月30日向CNIPA提交的名称为“显示装置、自动调节显示屏亮度的方法及终端设备”的中国专利申请No.201810539342.9的优先权，其全文通过引用合并于本文。
技术领域
本公开的实施例涉及一种显示装置、自动调节显示装置的显示屏亮度的方法，以及用于执行所述显示装置的显示屏亮度自动调节方法的终端设备。
背景技术
环境光侦测装置通常设于显示面板的可视区(即VA，View Area)或黑矩阵(BM)区，其中BM区通常指非显示区，即AA区，也即可操作区外围的边框区域。然而，上述技术方案中环境光侦测装置需要额外占用显示面板的相应区域，不利于无边框屏的实现。
发明内容
本公开的实施例提供一种显示装置，所述显示装置将环境光侦测装置集成于可视区，有利于无边框屏的实现。本公开的实施例还提供一种自动调节显示装置的显示屏亮度的方法。
本公开的实施例还提供一种用于执行上述自动调节显示装置的显示屏亮度的方法的终端设备。
根据本公开至少一个实施例提供的显示装置，所述显示装置包括：环境光侦测装置，所述环境光侦测装置包括遮光层和光电传感器；显示组件；和控制装置，所述显示组件包括：背板组件，所述遮光层设于所述背板组件内，且所述遮光层上设有适于环境光通过的通光孔，所述光电传感器设于所述背板组件的下部并且配置来检测所述环境光的变换；显示屏，所述显示屏设于所述背板组件的上方；显示芯片，所述显示芯片与所述显示屏相连。所述控 制装置与所述光电传感器相连以接收并处理所述光电传感器感应到的光信号，所述显示芯片与所述控制装置相连，以根据所述环境光的变换调节所述显示屏的亮度。
例如，所述背板组件包括：基板，所述遮光层设于所述基板的上表面，所述光电传感器设于所述基板的下部；发光层，所述发光层设于所述遮光层的上方；阳极，所述阳极设于所述发光层的下表面；以及阴极，所述阴极设于所述发光层的上表面。所述通光孔被构造成由所述发光层发出的光线经所述阴极反射后不会由所述通光孔射向所述光电传感器，以消除由所述发光层发出的光线对所述环境光的干扰。
例如，由所述发光层发出的光线经所述阴极反射至所述遮光层时，对于与所述遮光层相交于所述通光孔的周缘的反射光线，过所述反射光线与所述遮光层的交点作垂直于遮光层所在平面的垂线，所述垂线与所述反射光线的夹角大于约30°。
例如，所述背板组件还包括：背膜，所述背膜设于所述基板的下表面，所述光电传感器设于所述背膜的下部；以及薄膜晶体管层，所述薄膜晶体管层设于所述遮光层与所述阳极之间。
例如，所述环境光侦测装置还包括低折射率层，所述低折射率层设在所述光电传感器与所述基板之间，所述低折射率层被构造成使所述环境光通过，且使由所述发光层发出的光线射向所述低折射率层时发生全反射。
例如，所述低折射率层为二氧化硅层，或所述基板与所述光电传感器之间粘接且限定有空腔，所述低折射率层为空气层。
例如，所述通光孔为沿厚度方向贯穿所述遮光层的通孔，所述通孔被构造成圆形或多边形。
例如，所述通光孔包括多个且呈阵列排布，所述通光孔的最大径向尺寸为约5μm至约15μm。
例如，所述发光层的厚度在约1μm以下。
例如，所述显示装置还包括防护层，封装层和像素界定层。所述防护层设置在环境光侦测装置的上部，所述封装层设置在所述阴极层的上方，以及所述像素界定层与所述阳极层同层设置。
根据本公开的至少一个实施例，还提供一种自动调节所述显示装置的显 示屏亮度的方法，包括：所述光电传感器感应环境光，所述控制装置接收所述光电传感器感应到的光信号，并将所述光信号与所述显示芯片内存储的信号进行比较；判断所述环境光的照射强度是否达到调节阈值；如果是，所述控制装置发送调节信号至所述显示芯片，通过所述显示芯片调节所述显示屏的驱动电流以改变所述显示屏的亮度，并由所述光电传感器继续感应环境光；以及如果否，返回至由所述光电传感器继续感应环境光。
根据本公开的至少一个实施例，还提供一种终端设备，所述终端设备配置来执行所述显示装置的显示屏亮度的调节方法，所述终端设备包括：光电传感器，显示组件和控制装置。所述光电传感器和所述显示组件均与所述控制装置电连接，所述显示组件包括显示芯片和显示屏。所述光电传感器，配置来感应环境光，获取光信号；所述控制装置，配置来根据所述光电传感器感应到的光信号与所述显示芯片内存储的信号进行比较，并判断所述环境光的照射强度是否达到调节阈值，如果是，则发送调节信号至所述显示芯片；以及所述显示芯片，配置来根据所述调节信号调节所述显示屏的驱动电流以改变所述显示屏的亮度。
例如，所述光电传感器通过传感器柔性线路板和显示组件通过显示柔性线路板均与控制装置电连接。
附图说明
以下将结合附图对本公开的实施例进行更详细的说明，以使本领域普通技术人员更加清楚地理解本公开的实施例本公开其中：
图1是根据本公开实施例的显示装置的一个示意图；
图2是根据本公开实施例的显示装置的另一个示意图；
图3是根据本公开实施例的显示装置的再一个示意图，其中图中的箭头指向代表由发光层发出的光线的传播方向；
图4是根据本公开实施例的显示装置的又一个示意图；
图5是根据本公开实施例的显示装置中由发光层发出的光线的光路传播示意图；
图6是根据本公开实施例的显示装置的示意图，其中图中示出了环境光侦测装置的另一个实施例；
图7是图6中的显示装置的一个示意图；
图8显示根据本公开的实施例的显示装置在室内光亮状态下，光电传感器感应到的光能量；
图9显示根据本公开的实施例的显示装置在室内稍暗状态(例如关闭部分灯)下，光电传感器感应到的光能量；
图10显示根据本公开的实施例的显示装置在室内稍暗状态(例如关闭部分灯)下，并且在白纸遮盖状态下(即，白纸遮盖在显示屏的正前面)光电传感器感应到的光能量；
图11显示根据本公开的实施例的显示装置在室内关灯状态下，光电传感器感应到的光能量；
图12是根据本公开实施例的自动调节显示装置的显示屏亮度的调节方法的流程图；
图13是根据本公开实施例的终端设备的示意框图；
图14是根据本公开实施例的终端设备的结构示意图；以及
图15是根据本公开实施例的控制装置工作的流程图。
具体实施方式
下面将结合本公开实施例的附图，对本公开实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本公开的一部分实施例，而不是全部的实施例。基于所描述的本公开的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本公开保护的范围。
除非另外定义，本公开使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对 象的绝对位置改变后，则该相对位置关系也可能相应地改变。
下面通过参考附图描述的实施例是示例性的，旨在用于解释本公开，而不应理解为对本公开的限制。
下面结合附图描述根据本公开实施例的显示装置100。
根据本公开实施例的显示装置100，显示装置100的可操作区内集成有环境光侦测装置1。通过将环境光侦测装置1集成于显示装置100的可操作区，可以减少环境光侦测装置1对可操作区外围的边框区域的占用，从而有利于全面无边框屏的实现。
下面结合附图描述根据本公开显示装置100的示例性实施例。
参照图1，环境光侦测装置1可以包括遮光层11和光电传感器12。遮光层11可以为金属层，例如钼层、钛层、银层等，遮光层11的厚度可以根据实际需要适应性设置。
参照图2并结合图1，显示装置100包括：显示组件2和控制装置3。显示组件2包括背板组件21、显示屏22以及显示芯片。
例如，环境光侦测装置1的遮光层11可以设于背板组件21内。背板组件21具有多层结构，遮光层11属于所述多层结构中的一层；并且遮光层11上设有通光孔111，通光孔111适于环境光4通过。这样的设置有利于环境光侦测的准确，提高显示装置100的使用性能。
显示屏22设于背板组件21的上方，所述显示芯片与显示屏22相连，所述显示芯片的设置位置可以选择，光电传感器12设于背板组件21的底部用于检测环境光4的变换，这里的变换例如指由于环境光照度引起的传感器光电流的改变。
控制装置3与光电传感器12相连用于接收并处理光电传感器12感应到的光信号，所述显示芯片与控制装置3相连，以根据环境光4的变换调节显示屏22的亮度。由此，通过将环境光侦测装置1集成在显示装置100的可操作区，有利于减少环境光侦测装置1对显示装置100其他区域的占用，从而有利于全面屏的实现。
例如，通过使控制装置3分别与光电传感器12和所述显示芯片相连，控制装置3可以接收并处理光电传感器12感应到的光信号，并将所述光信号与所述显示芯片内存储的信号进行比较，这样可以使所述显示芯片根据环境光 4的变换调节显示屏22的亮度，不仅能够节省电量，还有利于提高用户的使用舒适度。
例如，控制装置3一般包括数字信号处理芯片(DSP)、印刷线路板(PCB)、CPU、显示芯片(IC)。
控制装置的工作过程如图15所示：光电传感器感应到环境光信号，环境光信号经过DSP处理(这里一般是插值模糊化处理)，通过PCB将处理后的数据送往CPU，由CPU判断显示屏的亮度(或灰度)是否需要调节，如果没有达到阈值，不需要调节，中断此次操作，如果达到阈值，需要调节，计算出调节比例，并将调节数据发送给显示芯片(IC)，将调节数据与显示数据的DATA进行叠加，然后送往显示屏显示。例如，还可以包括：欧和灰度控制信号和显示原始数据(RAW DATA)，并传送最终的显示数据进行显示。
此外，例如，DSP作为数字信号处理芯片，数字信号处理芯片可以包含在CMOS内部。DSP框架包括ISP(信号处理器)。
例如，DSP框架还可以包括JPEG encoder(图像解码器)。
根据本公开实施例的显示装置100，通过将环境光侦测装置1集成在显示装置100的可操作区内，相较于现有技术而言，有利于节省屏幕空间、提高屏占比。另外，通过使控制装置3分别与光电传感器12和所述显示芯片相连，使得显示装置100可以根据环境光4的变换调节显示屏22的亮度，提高用户使用的舒适度且节约能源。
例如，结合图3和图4，背板组件21包括：基板211、发光层212、阳极213以及阴极214。
遮光层11设于基板211的上表面，光电传感器12设于基板211的底部，光电传感器12可以用于检测环境光4的变换；发光层212设于遮光层11的上方；阳极213设于发光层212的下表面；阴极214(例如金属阴极)设于发光层212的上表面。
发光层212可以为有机发光层(即EL，Emitting Layer)，通光孔111被构造成使得由发光层212发出的光线经阴极214反射后不会由通光孔111射向光电传感器12，以消除由发光层212发出的光线对环境光4的干扰。如此，有利于避免发光层212自身发出的光线对环境光4的干扰，使得环境光侦测准确。
遮光层11可以遮挡一部分光线，例如遮光层11可以遮挡由发光层212发出的光线，从而有利于减少由发光层212发出的光线对环境光4的干扰，提高光电传感器12的检测准确性，进而通过所述显示芯片适应性调整显示屏22的亮度。
例如，通光孔111为沿厚度方向贯穿遮光层11的通孔，通孔被构造成圆形或多边形。由此，有利于增加透光率，还能够避免发光层212自身发出的光线对环境光4的干扰，使得环境光侦测准确。
例如，通光孔111包括多个，并且多个通光孔111可以呈阵列排布。由此，更有利于增加透光率，还有利于避免发光层212自身发出的光线对环境光4的干扰，使得环境光侦测准确，更好地调节屏幕的亮度。
为了增加透光量，可以尽量增加通光孔111的密度。例如，可以在每个子像素旁边制作一个通光孔111。将环境光检测装置1设计在可操作区内，可以增大显示屏22的面积，实现更大的屏占比。
应该理解，例如，可操作区可以设置在显示区域。例如，可以在全屏形成孔阵列，也可以在屏幕的某个区域形成孔或孔阵列。如果在全屏制作，则全屏可称为操作区，如果只是在局部制作，由于传感器比较小，需要将传感器置于制作了孔阵的区域才能起到效果，因此，此局部区域则可以称为可操作区。
例如，通过将环境光侦测装置1集成到可操作区内，自动根据环境光调节屏幕亮度，可以节省出多余的空间，增大屏幕的面积，提高屏占比，有利于全面屏的实现。
此外，通过设置遮光层11，并在遮光层11上开设通光孔111，避免发光层212自身发光对检测环境光4的光电传感器12的干扰，使得环境光侦测准确，可以实现全屏指纹识别。可以理解的是，指纹识别的过程可以参照常规的指纹识别方法，这里不再赘述。
可选地，通光孔111的最大径向尺寸为约5μm至约15μm。由此，通过将通光孔111的最大径向尺寸设置在约5μm至约15μm的范围内，更有利于增加透光率，还有利于避免发光层212自身发出的光线对环境光4的干扰，使得环境光侦测准确。
通光孔111的最大径向尺寸可以为例如约5μm、约8μm、约10μm或 约15μm等。
这里，需要说明的是，当通光孔111为圆形孔时，通光孔111的最大径向尺寸指的是圆形孔的直径；当通光孔111为多边形孔时，通光孔111的最大径向尺寸指的是通光孔111的外接圆的直径，通光孔111的最小径向尺寸指的是通光孔111的内切圆的直径，这对本领域技术人员来说是可以理解的。
可选地，发光层212的厚度可以在约1μm以下。由此，使得显示装置100的结构更加轻薄且结构紧凑。
参照图3和图4，显示装置100还包括防护层5(例如防护玻璃罩等)、封装层6以及像素界定层7，例如，防护层5可以设于显示屏的最外侧，通过防护层5可以对显示屏及环境光侦测装置1等进行一定的保护，有利于确保环境光侦测的准确性，延长显示装置100的使用寿命。
封装层6可以设于阴极214的上方，像素界定层7与阳极213可以位于同一层。如图4所示，显示装置还可以包括偏光片23以及触摸屏24。触摸屏24可以通过光学胶粘结至封装层6上。例如，防护层5可以设置在偏光片23上。
可选地，参照图3并结合图4，背板组件21还包括：背膜215以及薄膜晶体管层216，背膜215设于基板211的下表面，光电传感器12设于背膜215的底部。背膜215可以为玻璃或热塑性聚酯PET(聚对苯二甲酸乙二醇酯，Polythylene terephthalate)等。薄膜晶体管层216可以设于遮光层11与阳极213之间。所述显示芯片与薄膜晶体管层216相连，通过所述显示芯片可以调整每个像素的亮暗。发光层212发出的光经阴极214反射至遮光层11时，若反射光线与遮光层11相交于通光孔111的周缘(例如，通光孔111在遮光层11上的投影与所述反射光线相交)，过反射光线与遮光层11的交点作垂直于遮光层11所在平面的垂线，所述垂线与所述反射光线的夹角大于约30°。这样更有利于避免发光层212自身发出的光线对环境光4的干扰，使得环境光侦测准确。
例如，由发光层212发出的光线与阴极214具有交点并经由所述交点向遮光层11反射，通光孔111在遮光层11上的投影为圆形，通光孔111沿直径方向的两端具有端点，连接所述交点与所述端点形成第一连线，过所述端点作垂直于遮光层11所在平面的垂线形成第二连线，所述第一连线与所述第 二连线之间的夹角大于约30°。
例如，参见图5并结合图3，发光层212的上表面的边缘的一点为A1，发光层212的下表面的边缘的一点为A3，位于发光层212的上表面与下表面之间的某处边缘的一点为A2，所述端点包括第一端点B1和第二端点B2。
若由所述A1点发出的光线经由所述第一端点B1射出，过所述第一端点B1的垂直于遮光层11所在平面的垂线与阴极214具有第一交点为O1，第一夹角∠A1B101，或称θ 1，大于约30°。
例如，所述交点还包括第二交点O2、第三交点O3和第四交点O4，若由所述A2点发出的光线经由所述第二交点O2由所述第一端点B1射出，第二夹角∠O2B1O1，或称θ 2，大于约30°。
若由所述A3点发出的光线经由所述第三交点O3由所述第二端点B2射出，过所述第二端点B2的垂线与阴极214具有第四交点为O4，第三夹角∠O3B2O4大于，或称θ 3，约30°。
例如，环境光4通过通光孔111，进入光电传感器12感光，光电传感器12侦测积分的感光能量，控制装置3分别与光电传感器12和所述显示芯片相连，控制装置3判断环境光4的强弱，通过所述显示芯片自动调节显示屏22的亮度。同时，通光孔111可以起到遮蔽显示装置100，例如OLED(Organic Light-Emitting Diode，有机发光二极管)内部发光层212发光的作用，避免显示装置100内部的杂散光干扰光电传感器12的侦测而造成误判。
如图3所示，为使得遮光层11的通光孔111能够消除发光层212自身发出的光线，要求所述夹角θ 1，θ 2，θ 3都大于约30°，例如为38°等，其中θ 1，θ 2，θ 3满足：
Figure PCTCN2019074609-appb-000001
Figure PCTCN2019074609-appb-000002
Figure PCTCN2019074609-appb-000003
其中，A指第二发光点与反射光与遮光层的交点之间的垂直距离，B指第一发光点与光或反射光与遮光层的交点之间的垂直距离，E指反射层下表 面到遮光层上表面之间的垂直距离，F指发光层的下表面与遮光层的上表面之间的垂直距离。
这里，需要说明的是，图3至图5中示出的发光层212的厚度非常薄，为了便于说明，在图中示意性地画出了发光层212的结构以及部分光线。
根据本公开的另一实施例，环境光侦测装置1还可以包括低折射率层13。
根据本公开的一些实施例，参照图6，环境光侦测装置1还可以包括低折射率层13，低折射率层13设在光电传感器12与基板211之间，低折射率层13被构造成使所述环境光通过，且使由发光层212发出的光线射向低折射率层13时发生全反射。
例如，参照图7，基板211的下表面设有背膜215，低折射率层13可以设在光电传感器12与背膜215之间。
可选地，低折射率层13可以为二氧化硅层，或基板211与光电传感器12之间粘接层。此外，基板211与光电传感器12之间可以限定有空腔，低折射率层13可以为空气层。低折射率层13的形式可以根据需要进行选择。由此，由发光层212发出的部分光线经阴极214反射后，若有光线经由通光孔111射向光电传感器12，此时，通过低折射率层13可以使所述光线发生全反射，从而有利于进一步减少发光层212自身发出的光线对环境光4的干扰，更有利于环境光侦测的准确。
通过合理设置通光孔111的位置，使得由发光层212发出的光线经由通光孔111射向光电传感器12时可以发生全反射，当环境光4通过通光孔111射向低折射率层13时不会发生全反射，因此，低折射率层13对环境光4基本没有影响。
例如，环境光4仍旧可以穿透低折射率层13到达光电传感器12的表面，但显示装置100内部的自发光也会有内部反射，大部分会被遮光层11遮蔽掉，不会引起干扰。即使由发光层212发出的部分光线射入遮光层11的通光孔111，其入射角度也会比较大，在低反射率层13产生全发射，不会达到光电传感器12的表面，因此，光电传感器12侦测到的基本都是环境光4，可以使得侦测准确，从而可以根据环境光亮度变化而改变显示屏22的亮度，且不会受到显示装置显示画面的影响。
如图8所示，为室内光亮状态下，光电传感器12感应到的光能量；如图 9和图10所示，为室内稍暗状态下，光电传感器12感应到的光能量；如图11所示，为室内关灯状态下感应到的光能量；所有测试都是在点屏状态(即，显示屏点亮的状态)下测试，可以明显看到，随着环境光4变化，光电传感器12所感应到的光能量也随之变化，显示屏点亮状态下没有对环境光4产生干扰。
参照图12，根据本公开的实施例，还提供自动调节上述显示装置的显示屏亮度的方法。所述光电传感器感应环境光，所述控制装置接收所述光电传感器感应到的光信号，并将所述光信号与所述显示芯片内存储的信号进行比较，所述控制装置判断所述环境光的照射强度是否达到调节阈值(所述调节阈值可以适应性设置)。如果是，所述控制装置发送调节信号至所述显示芯片，通过所述显示芯片调节所述显示屏的驱动电流以改变所述显示屏的亮度，并由所述光电传感器继续感应环境光；如果否，返回至由所述光电传感器继续感应环境光。由此，可以根据环境光的变换自动调节显示屏的亮度，且有利于避免发光层自身发出的光线对环境光的干扰，使得环境光侦测准确。
例如，所述光信号与所述显示芯片内存储的信号存在对应关系，如果所述光信号与所述显示芯片内存储的信号不匹配，此时可以判断所述环境光的照射强度达到调节阈值。
这里，所述控制装置与光电传感器可以独立设置，当然，所述控制装置也可以集成有光电传感器的比较模块以及解析模块等。
参照图13并结合图14和图15，根据本公开的实施例，还提供一种终端设备200，终端设备200用于执行上述的显示装置的显示屏亮度的方法。终端设备200包括：光电传感器210、显示组件230和控制装置220。
光电传感器210和显示组件230均与控制装置220电连接，显示组件230包括显示芯片231和显示屏232。
例如，如图14所示，光电传感器210通过传感器柔性线路板(FPC)218和包括显示芯片231和显示屏232的显示组件230通过显示FPC均与控制装置220电连接。
例如，光电传感器210，用于感应环境光，获取光信号；控制装置220，用于根据光电传感器210感应到的光信号与显示芯片231内存储的信号进行比较，并判断环境光的照射强度是否达到调节阈值，如果是，则发送调节信 号至显示芯片231；显示芯片231，用于根据调节信号调节显示屏232的驱动电流以改变显示屏232的亮度。
根据所述实施例的终端设备200，可以根据环境光的变换适应性调整显示屏232的亮度，有利于提高用户的使用舒适性体验。
需要说明的是，为了更加清晰的表示终端设备200的组成，终端设备200中与显示装置100名称相同的特征采用了不同的附图标记。
根据本公开实施例的显示装置的其他结构以及操作对于可以参照通常设计，这里不再详细描述。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、或“一些示例”等的描述意指结合该实施例或示例描述的特征、结构、材料或者特点包含于本公开的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的普通技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
以上所述仅是为了说明本公开的原理而采用的示例性实施例，然而本公开的实施例并不局限于此。对于本领域内的普通技术人员而言，在不脱离本公开的实施例的原理的情况下，可以做出各种变型和改进，这些变型和改进也应视为落入本公开的保护范围。

Claims (13)

  1. 一种显示装置，包括：环境光侦测装置，所述环境光侦测装置包括遮光层和光电传感器；显示组件；和控制装置，所述显示组件包括：
    背板组件，所述遮光层设于所述背板组件内，且所述遮光层上设有适于环境光通过的通光孔，所述光电传感器设于所述背板组件的下部并且配置来检测所述环境光的变换；
    显示屏，所述显示屏设于所述背板组件的上方；
    显示芯片，所述显示芯片与所述显示屏相连；
    其中，所述控制装置与所述光电传感器相连以接收并处理所述光电传感器感应到的光信号，所述显示芯片与所述控制装置相连，以根据所述环境光的变换调节所述显示屏的亮度。
  2. 根据权利要求1所述的显示装置，其中，所述背板组件包括：
    基板，所述遮光层设于所述基板的上表面，所述光电传感器设于所述基板的下部；
    发光层，所述发光层设于所述遮光层的上方；
    阳极，所述阳极设于所述发光层的下表面；以及
    阴极，所述阴极设于所述发光层的上表面；
    其中，所述通光孔被构造成由所述发光层发出的光线经所述阴极反射后不会由所述通光孔射向所述光电传感器，以消除由所述发光层发出的光线对所述环境光的干扰。
  3. 根据权利要求2所述的显示装置，其中，由所述发光层发出的光线经所述阴极反射至所述遮光层时，对于与所述遮光层相交于所述通光孔的周缘的反射光线，过所述反射光线与所述遮光层的交点作垂直于遮光层所在平面的垂线，所述垂线与所述反射光线的夹角大于约30°。
  4. 根据权利要求2所述的显示装置，其中，所述背板组件还包括：
    背膜，所述背膜设于所述基板的下表面，所述光电传感器设于所述背膜的下部；以及
    薄膜晶体管层，所述薄膜晶体管层设于所述遮光层与所述阳极之间。
  5. 根据权利要求2-4中任一项所述的显示装置，其中，所述环境光侦测 装置还包括低折射率层，所述低折射率层设在所述光电传感器与所述基板之间，所述低折射率层被构造成使所述环境光通过，且使由所述发光层发出的光线射向所述低折射率层时发生全反射。
  6. 根据权利要求5所述的显示装置，其中，所述低折射率层为二氧化硅层，或所述基板与所述光电传感器之间粘接且限定有空腔，所述低折射率层为空气层。
  7. 根据权利要求1-6任一项所述的显示装置，其中，所述通光孔为沿厚度方向贯穿所述遮光层的通孔，所述通孔被构造成圆形或多边形。
  8. 根据权利要求7所述的显示装置，其中，所述通光孔包括多个且呈阵列排布，所述通光孔的最大径向尺寸为约5μm至约15μm。
  9. 根据权利要求1-8任一项所述的显示装置，其中，所述发光层的厚度在约1μm以下。
  10. 根据权利要求2-9任一项所述的显示装置，还包括防护层，封装层和像素界定层；其中，所述防护层设置在环境光侦测装置的上部，所述封装层设置在所述阴极层的上方，以及所述像素界定层与所述阳极层同层设置。
  11. 一种自动调节根据权利要求1-10中任一项所述的显示装置的显示屏亮度的方法，包括：
    所述光电传感器感应环境光，
    所述控制装置接收所述光电传感器感应到的光信号，并将所述光信号与所述显示芯片内存储的信号进行比较；
    判断所述环境光的照射强度是否达到调节阈值；
    如果是，所述控制装置发送调节信号至所述显示芯片，通过所述显示芯片调节所述显示屏的驱动电流以改变所述显示屏的亮度，并由所述光电传感器继续感应环境光；以及
    如果否，返回至由所述光电传感器继续感应环境光。
  12. 一种终端设备，其中，所述终端设备配置来执行如权利要求11所述的显示装置的显示屏亮度的调节方法，所述终端设备包括：光电传感器，显示组件和控制装置，其中，所述光电传感器和所述显示组件均与所述控制装置电连接，所述显示组件包括显示芯片和显示屏，其中，
    所述光电传感器，配置来感应环境光，获取光信号；
    所述控制装置，配置来根据所述光电传感器感应到的光信号与所述显示芯片内存储的信号进行比较，并判断所述环境光的照射强度是否达到调节阈值，如果是，则发送调节信号至所述显示芯片；以及
    所述显示芯片，配置来根据所述调节信号调节所述显示屏的驱动电流以改变所述显示屏的亮度。
  13. 根据权利要求12所述的终端设备，其中，所述光电传感器通过传感器柔性线路板和显示组件通过显示柔性线路板均与控制装置电连接。
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