TWI763464B - Display panel, operation method thereof and sub-pixel - Google Patents

Abstract

The invention provides a display panel, an operation method thereof and a sub-pixel circuit thereof. The display panel includes a plurality of sub-pixels. At least one of the sub-pixels includes a display part, a quantum dot material, and a sensing element. The quantum dot material is discriminatory to a blue component of a first light from the display part. The quantum dot material is excited by the blue component of the first light to generate a second light, and the sensing element can sense the second light. Wherein, the wavelength of the blue component of the first light is different from the wavelength of the second light, and the blue component and the second light belong to different wavelength ranges. The wavelength interval of the second light may be narrower than the wavelength interval of the blue component of the first light.

Description

Display panel and method of operation and sub-pixel

The present invention relates to a display device, and more particularly, to a display panel and its operation method and sub-pixels.

Medical literature has discussed that blue light components emitted by monitors may cause visual fatigue and injury to users. Technologies to "reduce harmful blue light from displays" can be divided into two categories: software and hardware. The software method is to adjust the ratio of red, blue, and green in the display image to reduce the intensity of blue light components, but the display image will have a color cast problem. The hardware approach is to move the blue light peaks of components to make them less harmful. In any case, the prior art uses an additional sensor (external sensor) to sense the blue light component of the display screen of the display panel. Such blue light sensing technology is not instantaneous, and the user needs to manually operate an additional sensor to sense the display image of the display panel.

In order to let the user know the current state of the blue light component of the display panel, and/or to adjust the display parameters automatically (regularly or irregularly) and in real time, "How to sense the blue light component of the display screen in real time without using an external type sensor" is one of many important technical topics.

The present invention provides a display panel and an operation method and sub-pixels thereof for self-sensing specific components of a display screen.

In an embodiment of the present invention, the above-mentioned display panel includes a plurality of sub-pixels. At least one of the sub-pixels includes a display portion, a first quantum dot material, and a first sensing element. The first quantum dot material is configured to be excited by the first blue light component of the first light from the display portion to generate the second light. The first sensing element is configured to sense the second light. The wavelength of the first blue light component of the first light is different from the wavelength of the second light, the first quantum dot material is discriminative to the first blue light component of the first light, and the first blue light component and the second light belong to different wavelength range.

In an embodiment of the present invention, the above-mentioned operation method includes: exciting the first quantum dot material by the first blue light component of the first light from the display portion to generate the second light; and sensing by the first sensing element Second light. The wavelength of the first blue light component of the first light is different from the wavelength of the second light, the first quantum dot material is discriminative to the first blue light component of the first light, and the first blue light component and the second light belong to different wavelength range.

In an embodiment of the present invention, the above-mentioned sub-pixel includes a display part and a sensing part. The sensing part includes a first sensing capacitor, a first quantum dot material, and a first sensing element. The first end of the first sensing capacitor is coupled to the first end of the first sensing element. The second end of the first sensing element is coupled to the first sensing line of the display panel. The first quantum dot material is configured to be excited by the first blue light component of the first light from the display portion to generate the second light. The first sensing element is configured to sense the second light. The second light affects the first leakage current of the first sensing element. wherein, during the reset period, the first sensing capacitor is charged; during the sensing period, the first sensing element leaks the charge of the first sensing capacitor based on the first leakage current affected by the second light; and during the readout During this period, the first sensing element is turned on.

Based on the above, at least one sub-pixel (sub-pixel circuit) of the display panel according to the embodiments of the present invention includes a display part and a sensing part, wherein the sensing part includes a quantum dot material and a sensing element. The quantum dot material is discriminative to the first blue light component of the first light from the display portion. The quantum dot material is excited by the first blue light component of the first light to generate the second light. The sensing element can sense the second light, so the processing circuit can instantly know the intensity of the first blue light component from the display part according to the sensing result of the sensing element. That is to say, the display panel can self-sensing a specific component of the display image (eg, the first blue light component) without requiring an additional sensor (external sensor).

In order to make the above-mentioned features and advantages of the present invention more obvious and easy to understand, the following embodiments are given and described in detail with the accompanying drawings as follows.

The term "coupled (or connected)" as used throughout this specification (including the scope of the application) may refer to any direct or indirect means of connection. For example, if it is described in the text that a first device is coupled (or connected) to a second device, it should be interpreted that the first device can be directly connected to the second device, or the first device can be connected to the second device through another device or some other device. indirectly connected to the second device by a connecting means. Terms such as "first" and "second" mentioned in the full text of the description (including the scope of the patent application) in this case are used to designate the names of elements or to distinguish different embodiments or scopes, rather than to limit the number of elements The upper or lower limit of , nor is it intended to limit the order of the elements. Also, where possible, elements/components/steps using the same reference numerals in the drawings and embodiments represent the same or similar parts. Elements/components/steps that use the same reference numerals or use the same terminology in different embodiments may refer to relative descriptions of each other.

FIG. 1 is a schematic diagram of a circuit block of a display device 100 according to an embodiment of the present invention. The display device 100 shown in FIG. 1 includes a display panel 110 , a source driver (data driver) 120 , a gate driver (scan driver) 130 and a processing circuit 140 . According to different design requirements, the implementation of the source driver 120 , the gate driver 130 and/or the processing circuit 140 may be hardware, firmware, software (program) or A combination of more than one of the above three.

In terms of hardware, the source driver 120 , the gate driver 130 and/or the processing circuit 140 can be implemented as logic circuits on an integrated circuit. The above-mentioned source driver 120 , gate driver 130 and/or related functions of the processing circuit 140 can be implemented as hardware using hardware description languages (such as Verilog HDL or VHDL) or other suitable programming languages. For example, the above-mentioned related functions of the source driver 120, the gate driver 130 and/or the processing circuit 140 can be implemented in one or more controllers, microcontrollers, microprocessors, application-specific integrated circuits ( Various logic blocks and modules in Application-specific integrated circuit (ASIC), digital signal processor (DSP), Field Programmable Gate Array (FPGA) and/or other processing units and circuit.

In the form of software and/or firmware, the above-mentioned related functions of the source driver 120 , the gate driver 130 and/or the processing circuit 140 can be implemented as programming codes. For example, the above-mentioned source driver 120 , gate driver 130 and/or processing circuit 140 are implemented using general programming languages (eg, C, C++ or assembly language) or other suitable programming languages. Programming code can be recorded/stored in "non-transitory computer readable medium". In some embodiments, non-transitory computer-readable media include, for example, Read Only Memory (ROM), tape, disk, card, semiconductor memory, programmable Logic circuits and/or storage devices. The storage device includes a hard disk drive (HDD), a solid-state drive (SSD), or other storage devices. A central processing unit (CPU), controller, microcontroller or microprocessor can read and execute programming codes from a non-transitory computer-readable medium, thereby implementing the source driver 120 and gate driver described above. 130 and/or related functions of the processing circuit 140 .

The display panel 110 includes m*n sub-pixels, such as the sub-pixels 111-11, 111-m1, 111-1n and 111-mn shown in FIG. 1 , where m and n are integers determined according to actual designs. Each of these sub-pixels 111-11 to 111-mn includes a display portion, for example, the sub-pixel 111-11 shown in FIG. 1 includes a display portion DP. The control terminal (gate) of each of the display parts DP of the sub-pixels 111 - 11 to 111 -mn is coupled via a corresponding gate line among a plurality of gate lines (scan lines) G1 to Gn of the display panel 110 to the gate driver 130 . The data terminal (source) of each of the display portions DP of the sub-pixels 111 - 11 to 111 -mn is coupled to a corresponding data line of the plurality of data lines (source lines) D1 to Dm of the display panel 110 via a corresponding data line. source driver 120 .

The implementation details of the display part DP can be determined according to actual designs. For example, in some embodiments, the display part DP shown in FIG. 1 may include a self-luminous sub-pixel structure (eg, refer to the related description of the display part DP shown in FIG. 2 ) to generate the first light L1 . In other embodiments, the display part DP shown in FIG. 1 may include a non-self-luminous sub-pixel structure (for example, refer to the related description of the display part DP shown in FIG. 3 ). The backlight (not shown in FIG. 1 ) can generate the first light L1 through the non-self-luminous sub-pixel structure. In still other embodiments, the display portion DP shown in FIG. 1 may include conventional sub-pixel circuits or other sub-pixel circuits.

FIG. 2 is a schematic circuit diagram illustrating the display portion DP shown in FIG. 1 according to an embodiment of the present invention. The display part DP shown in FIG. 2 is an example of the implementation of the display part DP shown in FIG. 1 , but the implementation of the display part DP shown in FIG. 1 is not limited to the embodiment shown in FIG. 2 . The display portion DP shown in FIG. 2 includes a self-luminous sub-pixel structure (eg, a switch 210 , a transistor 220 and a light-emitting element 230 ). Please refer to FIG. 1 and FIG. 2 . The control terminal (eg, gate) of the switch 210 is coupled to the gate driver 130 via a corresponding gate line among the plurality of gate lines (scan lines) G1 ˜Gn of the display panel 110 . The first end (data end, such as source) of the switch 210 is coupled to the source driver 120 through a corresponding data line among the plurality of data lines (source lines) D1 -Dm of the display panel 110 . The control terminal (eg, the gate) of the transistor 220 is coupled to the second terminal (eg, the drain) of the switch 210 . The first terminal (eg, source) of the transistor 220 is coupled to the power supply voltage VDD. The first end of the light emitting element 230 is coupled to the second end (eg, the drain) of the transistor 220 . The second terminal of the light emitting element 230 is coupled to the reference voltage VSS. The levels of the power supply voltage VDD and the reference voltage VSS can be determined according to the actual design. According to the actual design, in some embodiments, the light emitting element 230 may include a light emitting diode (LED), a micro light emitting diode, an organic light emitting diode (OLED), or other self-made light-emitting diodes. light-emitting element.

FIG. 3 is a schematic circuit diagram illustrating the display part DP shown in FIG. 1 according to another embodiment of the present invention. The display part DP shown in FIG. 3 is an example of the implementation of the display part DP shown in FIG. 1 , but the implementation of the display part DP shown in FIG. 1 is not limited to the embodiment shown in FIG. 3 . The display portion DP shown in FIG. 3 includes a non-self-luminous sub-pixel structure (such as a switch 310, a storage capacitor 320, and a liquid crystal capacitor 330 (liquid crystal layer). Please refer to FIG. 1 and FIG. 3. The control terminal of the switch 310 (such as a gate electrode) is coupled to the gate driver 130 via a corresponding gate line among the plurality of gate lines (scan lines) G1-Gn of the display panel 110. The first end (data end, such as the source) of the switch 310 is displayed via the display A corresponding data line among the plurality of data lines (source lines) D1-Dm of the panel 110 is coupled to the source driver 120. The first ends of the storage capacitor 320 and the liquid crystal capacitor 330 are coupled to the second end of the switch 210 ( For example, the drain). The second terminals of the storage capacitor 320 and the liquid crystal capacitor 330 are coupled to the common voltage VCOM. The level of the common voltage VCOM can be determined according to the actual design.

Referring to FIG. 1, at least one of the sub-pixels 111-11 to 111-mn includes a sensing portion. For example, the sub-pixels 111-11 include the sensing part SP. According to the actual design, the relevant descriptions of the sub-pixels 111 - 11 may be applicable to one or more (or even all) of the other sub-pixels of the display panel 110 . The sensing parts SP of the sub-pixels 111 - 11 to 111 -mn may provide a sensing result to the processing circuit 140 via a corresponding sensing line among the plurality of sensing lines S1 - Sm of the display panel 110 . The sensing parts SP of the sub-pixels 111-11 include a quantum dot material QD (not shown in FIG. 1 , which will be described in detail in later embodiments) and a sensing element SE (not shown in FIG. 1 ) , which will be described in detail later in the Examples).

FIG. 4 is a schematic flowchart of a method for operating a display panel according to an embodiment of the present invention. Please refer to FIG. 1 and FIG. 4 . A portion of the first light L1 from the display portion DP of the sub-pixel 111-11 may be irradiated to the quantum dot material QD (not shown in FIG. 1 ) of the sensing portion SP of the sub-pixel 111-11. In step S410, the quantum dot material QD of the sensing part SP may be excited by the first blue light component of the first light L1 from the display part DP to generate the second light. The quantum dot material QD has discrimination for the first blue light component of the first light L1. That is, a certain wavelength range of the first light L1 is easy to excite the quantum dot material QD, but other wavelength ranges of the first light L1 are not easy (or even unable) to excite the quantum dot material QD. By modulating the composition of the quantum dot material QD, the specific wavelength range (the first blue light composition) can be determined according to the actual design. For example, in some embodiments, the first blue light component (specific wavelength range) may belong to the blue wavelength range (eg, blue light with a wavelength less than 455 nm). The quantum dot material QD can be excited by the first blue light component of the first light L1 to generate the second light, wherein the first blue light component and the second light belong to different wavelength ranges respectively.

The quantum dot material QD (not shown in Figure 1) is determined according to the actual design. For example, in some embodiments, the quantum dot material QDs may include inorganic compounds, organic inorganic hybrid halide perovskite materials, or other quantum dot materials. The inorganic compound may include PbS, BaS, CdTe, GaAs, InGaAs, CuInS ₂ or other inorganic compounds. The inorganic composite halogen perovskite material can include An ₊₁ BnX _3n+1 , CsPbCl ₃ , CsPb(Cl/Br) ₃ , CsPbBr ₃ , CsPb(I/Br) ₃ , CsPbI ₃ or other inorganic composite halogen perovskite mineral material.

The sensing elements SE (not shown in FIG. 1 ) of the sensing parts SP of the sub-pixels 111 - 11 can sense the second light generated by the sub-dot material QD (not shown in FIG. 1 ). According to the actual design, the sensing element SE may include a phototransistor, a photoresistor, or other photosensitive elements. The wavelength of the first blue light component of the first light L1 is different from the wavelength of the second light. Based on the discrimination of the first blue light component of the first light L1 by the quantum dot material QD, the sensing result of the sensing element SE of the sensing part SP is in response to the first blue light component of the first light L1, and the sensing element SE The sensing result of , is not easily affected by other components of the first light L1 . In order to prevent other components of the first light L1 from affecting the sensing result of the sensing element SE, the position of the sensing element SE is outside the irradiation range of the first light L1.

FIG. 5 is a schematic cross-sectional view illustrating the sub-pixels 111 - 11 shown in FIG. 1 according to an embodiment of the present invention. FIG. 5 illustrates the transistor 220 and the light emitting element 230 of the display part DP and the blue light sensor capacitance Csen, the quantum dot material QD and the sensing element SE of the sensing part SP. The blue light sensing capacitor Csen shown in FIG. 5 can refer to the related description of the sensing capacitor C71 shown in FIG. 7 , or refer to the related description of the sensing capacitor C91 shown in FIG. 9 , or refer to the related description of the sensing capacitor C101 shown in FIG. 10 . For the description, either refer to the related description of the sensing capacitor C111 shown in FIG. 11 , or refer to the related description of the sensing capacitor C131 and/or C132 shown in FIG. 13 . The display part DP and the sensing part SP shown in FIG. 5 can refer to the related description of the display part DP and the sensing part SP shown in FIG. 1 . The transistor 220 and the light-emitting element 230 shown in FIG. 5 may refer to the related description of the transistor 220 and the light-emitting element 230 shown in FIG. 2 . For the quantum dot material QD and the sensing element SE mentioned in the embodiments shown in FIG. 1 and FIG. 4 , reference may be made to the related description of the quantum dot material QD and the sensing element SE shown in FIG. 5 .

The sub-pixels 111-11 shown in FIG. 5 further include a light reflection structure LP. The light reflecting structure LP is adapted to change the direction of a part of the first light L1 to reflect the part of the first light L1 to the quantum dot material QD. According to the actual design, the light reflection structure LP may include a reflector layer, a light-proof layer, an absorption layer and/or other structures. According to the actual design, the material of the reflective layer may include aluminum, aluminum alloy, aluminum oxide, copper, gold, multi-layer film reflective materials and/or other materials. The material of the absorption layer may include chromium (Cr), chromium oxide (CrO), carbon black resin (carbon black resin), nano carbon black (Nano carbon black) and/or other materials.

In the embodiment shown in FIG. 5 , the quantum dot material QD is arranged between the light reflecting structure LP and the sensing element SE. For example, the quantum dot material QDs can cover the sensing elements SE. The quantum dot material QD can be excited by a part of the first blue light component of the first light L1 to generate the second light to the sensing element SE. In the embodiment shown in FIG. 5, because the quantum dot material QD covers the sensing element SE, the sensing element SE is located outside the irradiation range of the first light L1, and the sensing element SE can sense the quantum dot material QD generated by the quantum dot material QD. the second light. By modulating the composition of the quantum dot material QD, the wavelength of the second light can be determined according to the actual design. For example, the wavelength range of the second light may be narrower than the wavelength range of the first light L1. According to the actual design, in some embodiments, the main wavelength range (accounting for more than 90%) of the first light L1 is 400 nm to 500 nm, and the main wavelength range (accounting for more than 90%) of the second light is 350 nm to 450 nm. In other embodiments, the main wavelength range of the first light L1 (accounting for more than 90%) is 400 nm to 500 nm, and the main wavelength range of the second light (accounting for more than 90%) is 350 nm to 380 nm.

FIG. 6 is a schematic cross-sectional view illustrating the sub-pixels 111 - 11 shown in FIG. 1 according to another embodiment of the present invention. FIG. 6 illustrates a black matrix BM, a color filter CF, and a photo spacer PS. FIG. 6 also shows the switch 310 and the liquid crystal capacitor 330 of the display part DP and the quantum dot material QD and the sensing element SE of the sensing part SP. The display part DP and the sensing part SP shown in FIG. 6 can refer to the related descriptions of the display part DP and the sensing part SP shown in FIG. 1 . The switch 310 and the liquid crystal capacitor 330 shown in FIG. 6 can refer to the related description of the switch 310 and the liquid crystal capacitor 330 shown in FIG. 3 . The first light L1 provided by the backlight (not shown) can pass through the liquid crystal capacitor 330 and the color filter CF. For the quantum dot material QD and the sensing element SE mentioned in the embodiments shown in FIG. 1 and FIG. 4 , reference may be made to the related description of the quantum dot material QD and the sensing element SE shown in FIG. 6 .

The sub-pixels 111-11 shown in FIG. 6 further include a light-shielding structure B, wherein the light-shielding structure B includes a quantum dot material QD. According to the actual design, the light-shielding structure B is disposed on the first substrate side 610 of the display panel, and the switch 310 and the sensing element SE are disposed on the second substrate side 620 of the display panel. The light shielding structure B is in the light path of a part of the first light L1. Therefore, the quantum dot material QD can receive part of the first light L1 from the first direction. Based on the excitation of the first blue light component of the first light L1, the quantum dot material QD can generate the second light L2 to the sensing element SE in the second direction. In the embodiment shown in FIG. 6 , the sensing element SE is located outside the irradiation range of the first light L1 , and the sensing element SE can sense the second light L2 generated by the sub-dot material QD.

By modulating the composition of the quantum dot material QD, the wavelength of the second light L2 can be determined according to the actual design. For example, the wavelength range of the second light L2 may be narrower than the wavelength range of the first light L1. According to the actual design, in some embodiments, the main wavelength range of the first light L1 (accounting for more than 90%) is 400 nm to 500 nm, and the main wavelength range of the second light L2 (accounting for more than 90%) is 350 nm to 450 nm . In other embodiments, the main wavelength range of the first light L1 (accounting for more than 90%) is 400 nm to 500 nm, and the main wavelength range of the second light L2 (accounting for more than 90%) is 350 nm to 380 nm.

FIG. 7 is a schematic circuit diagram illustrating the sensing part SP shown in FIG. 1 according to an embodiment of the present invention. The sub-pixels 111-11 and 111-12 shown in FIG. 7 are examples of two sub-pixels of the display panel 110 shown in FIG. 1, but the implementation of the sub-pixels of the display panel 110 shown in FIG. 1 is not limited to the implementation shown in FIG. 7 example. According to the actual design, the related descriptions of the sub-pixels 111-11 shown in FIG. 7 may be applicable to one or more of the other sub-pixels of the display panel 110 (eg, the sub-pixels 111-12 shown in FIG. 7).

The control terminal (gate) of the display portion DP of the sub-pixels 111-11 shown in FIG. 7 is coupled to the gate driver 130 through the gate line G1 of the display panel 110, and the data terminal of the display portion DP of the sub-pixels 111-11 is coupled to the gate driver 130. (Source) is coupled to the source driver 120 via the data line D1 of the display panel 110 . By analogy, the control terminals (gates) of the sub-pixels 111 - 12 are coupled to the gate driver 130 through the gate line G2 of the display panel 110 , and the data terminals (sources) of the sub-pixels 111 - 12 are connected through the display panel 110 The data line D1 is coupled to the source driver 120 . The display portion DP shown in FIG. 7 can refer to the related descriptions in FIG. 1 , FIG. 2 or FIG. 3 , and thus will not be repeated here.

The sensing part SP shown in FIG. 7 includes a quantum dot material QD (not shown in FIG. 7 ), a sensing element SE, a sensing capacitor C71 and a reset switch SW71 . The sensing capacitor C71 shown in FIG. 7 can refer to the related description of the blue light sensing capacitor Csen shown in FIG. 5 . The first end of the sensing capacitor C71 is coupled to the first end of the sensing element SE. The second end of the sensing element SE is coupled to the sensing line S1 of the display panel 110 . The quantum dot material QD may be excited by the first blue light component of the first light L1 from the display part DP to generate the second light L2. According to the actual design, the quantum dot material, the display part DP, the first light L1 and the second light L2 described in the embodiment of FIG. 7 can refer to the quantum dot material QD, the display part DP, the first light L1 described in the embodiment of FIG. 5 For the related description of the second light, or refer to the related description of the quantum dot material QD, the display part DP, the first light L1 and the second light L2 in the embodiment of FIG. 6 . The sensing element SE can sense the second light L2 generated by the sub-dot material QD, wherein the second light L2 affects the leakage current of the sensing element SE. According to the actual design, the relevant description of the sensing element SE shown in FIG. 7 may be applicable to the sensing element SE shown in FIG. 5 or FIG. 6 .

During reset, the sense capacitor C71 is charged. During the sensing period, the sensing element SE leaks the charge of the sensing capacitor C71 based on the leakage current affected by the second light L2 generated by the quantum dot material QD. During the readout period, the sensing element SE is turned on, so the processing circuit 140 can detect the charge amount (sense result) of the sensing capacitor C71 via the sensing line S1 and the sensing element SE.

The control terminal of the display part DP and the control terminal of the sensing element SE are jointly coupled to the gate line G1 of the display panel 110 . The first terminal of the reset switch SW71 is coupled to the first terminal of the sensing capacitor C71. The second end of the sensing capacitor C71 is coupled to the reference voltage Vref. According to the actual design, the reference voltage Vref may be the reference voltage VSS, the common voltage VCOM or other fixed voltages. The second terminal of the reset switch SW71 and the data terminal of the display portion DP are jointly coupled to the data line D1 of the display panel 110 . The control terminal of the reset switch SW71 is coupled to the gate lines of other sub-pixels of the display panel 110 (eg, the gate lines G2 of the sub-pixels 111 - 12 shown in FIG. 7 ).

FIG. 8 is a schematic diagram illustrating the signal waveforms of the gate line G1 , the gate line G2 and the sensing capacitor C71 shown in FIG. 7 according to an embodiment of the present invention. FIG. 8 shows two display frame periods F81 and F82. In each frame period, the gate driver 130 scans the gate lines G1 ˜Gn (as shown in FIG. 8 ). During the reset period RST (the driving period of the gate line G2 in the frame period F81 ), the sensing element SE is turned off, and the reset switch SW71 is turned on to charge the sensing capacitor C71 . During the sensing period SEN, the reset switch SW71 and the sensing element SE are turned off. The sensing element SE leaks the charge of the sensing capacitor C71 based on the leakage current affected by the second light L2 generated by the quantum dot material QD, so that the voltage level of the sensing capacitor C71 continues to decrease during the sensing period SEN. During the readout period RO, the reset switch SW71 is turned off, and the sensing element SE is turned on. Therefore, the processing circuit 140 can detect the charge amount (sensing result) of the sensing capacitor C71 through the sensing line S1 and the sensing element SE during the readout period RO.

To sum up, at least one sub-pixel (sub-pixel circuit) of the display panel 110 includes a display part DP and a sensing part SP, wherein the sensing part SP includes a quantum dot material QD and a sensing element SE. The quantum dot material QD has discrimination against the first blue light component of the first light L1 from the display part DP. The quantum dot material QD is excited by the first blue light component of the first light L1 to generate the second light. The sensing element SE may sense the second light. The processing circuit 140 can instantly know the intensity of the first blue light component from the display portion DP according to the sensing result of the sensing element SE. That is to say, the display panel 110 can self-sensing a specific component of the display image (eg, the first blue light component) without requiring an additional sensor (external sensor).

FIG. 9 is a schematic circuit diagram illustrating the sensing part SP shown in FIG. 1 according to another embodiment of the present invention. The sub-pixels 111-11 shown in FIG. 9 can refer to the related descriptions of the sub-pixels 111-11 shown in FIG. 1 . For the display portion DP shown in FIG. 9 , reference may be made to the relevant description of the display portion DP shown in FIG. 1 , FIG. 2 , FIG. 3 or FIG. The sensing part SP shown in FIG. 9 includes a quantum dot material QD (not shown in FIG. 9 ), a sensing element SE and a sensing capacitor C91 . According to the actual design, the quantum dot material QD, the sensing element SE, the sensing part SP and the display part DP described in the embodiment of FIG. Description of the element SE, the sensing part SP and the display part DP. The sensing capacitor C91 shown in FIG. 9 can refer to the related description of the blue light sensing capacitor Csen shown in FIG. 5 .

The control terminal of the display part DP and the control terminal of the sensing element SE are jointly coupled to the gate line G1 of the display panel 110 . The first end of the sensing capacitor C91 is coupled to the sensing element SE. The second end of the sensing capacitor C91 is coupled to the reference voltage Vref. The sensing element SE, the sensing capacitor C91 and the reference voltage Vref shown in FIG. 9 can refer to the related description of the sensing element SE, the sensing capacitor C71 and the reference voltage Vref shown in FIG.

The first end of the sensing capacitor C91 is also coupled to the reset line RL1 of the display panel 110 . During reset, the sensing element SE is turned off, and the processing circuit 140 can charge (reset) the sensing capacitor C91 via the reset line RL1. During sensing, the sensing element SE remains off, and the sensing capacitor C91 is not charged by the reset line RL1 (ie, the processing circuit 140 stops charging the sensing capacitor C91). Based on the leakage current affected by the second light generated by the quantum dot material QD, the sensing element SE leaks the charge of the sensing capacitor C91. During readout, the sense capacitor C91 is not charged by the reset line RL1, and the sense element SE is turned on. Therefore, the processing circuit 140 can detect the charge amount (sensing result) of the sensing capacitor C91 via the sensing line S1 and the sensing element SE.

FIG. 10 is a schematic circuit diagram illustrating the sensing part SP shown in FIG. 1 according to still another embodiment of the present invention. The sub-pixels 111-11 shown in FIG. 10 can refer to the related description of the sub-pixels 111-11 shown in FIG. 1 . The sub-pixels 111-11 and 111-12 shown in FIG. 10 can refer to the related description of the sub-pixels 111-11 and 111-12 shown in FIG. 7 . The display part DP shown in FIG. 10 can refer to the related description of the display part DP shown in FIG. 1 , FIG. 2 , FIG. 3 or FIG. 7 . The gate line G1, the gate line G2, the data line D1 and the sensing line S1 shown in FIG. 10 can refer to the related descriptions of the gate line G1, the gate line G2, the data line D1 and the sensing line S1 shown in FIG. Repeat.

The sensing part SP shown in FIG. 10 includes a quantum dot material QD (not shown in FIG. 10 ), a sensing element SE and a sensing capacitor C101 . According to the actual design, the quantum dot material QD, the sensing element SE, the sensing part SP and the display part DP described in the embodiment of FIG. 10 may refer to FIG. Description of the element SE, the sensing part SP and the display part DP. The sensing capacitor C101 shown in FIG. 10 can refer to the related description of the blue light sensing capacitor Csen shown in FIG. 5 . The control terminal of the sensing element SE is coupled to the gate lines of other sub-pixels of the display panel 110 (eg, the gate lines G2 of the sub-pixels 111 - 12 shown in FIG. 10 ). The first end of the sensing capacitor C101 is coupled to the sensing element SE. The second end of the sensing capacitor C101 is coupled to the reference voltage Vref. The sensing element SE, the sensing capacitor C101 and the reference voltage Vref shown in FIG. 10 can refer to the related descriptions of the sensing element SE, the sensing capacitor C71 and the reference voltage Vref shown in FIG.

The first end of the sensing capacitor C101 is also coupled to the reset line RL1 of the display panel 110 . The reset line RL1 shown in FIG. 10 may refer to the related description of the reset line RL1 shown in FIG. 9 . During reset, the processing circuit 140 may de-charge (reset) the sensing capacitor C101 via the reset line RL1. During the sensing period, the sensing element SE leaks the charge of the sensing capacitor C101 based on the leakage current affected by the second light generated by the quantum dot material QD. During the readout period, the sensing element SE is turned on, so the processing circuit 140 can detect the charge amount (sensing result) of the sensing capacitor C101 through the sensing line S1 and the sensing element SE.

FIG. 11 is a schematic circuit diagram illustrating the sensing part SP shown in FIG. 1 according to still another embodiment of the present invention. The sub-pixels 111-11, the display part DP, the gate line G1 and the data line D1 shown in FIG. 11 can refer to the sub-pixels 111-11, the display part DP, the gate lines shown in FIG. 1, FIG. 2, FIG. 3 or FIG. 7 Description of G1 and data line D1. For the sensing line S1 shown in FIG. 11 , reference may be made to the related description of the sensing line S1 shown in FIG. 7 , and thus will not be repeated here.

The sensing part SP shown in FIG. 11 includes a quantum dot material QD (not shown in FIG. 11 ), a sensing element SE and a sensing capacitor C111 . According to the actual design, the quantum dot material QD, the sensing element SE, the sensing part SP and the display part DP in the embodiment of FIG. 11 can refer to FIG. Description of the element SE, the sensing part SP and the display part DP. The sensing capacitor C111 shown in FIG. 11 can refer to the related description of the blue light sensing capacitor Csen shown in FIG. 5 . The first end of the sensing capacitor C111 shown in FIG. 11 is coupled to the sensing element SE. The second end of the sensing capacitor C111 is coupled to the reference voltage Vref. The sensing element SE, the sensing capacitor C111 and the reference voltage Vref shown in FIG. 11 can refer to the related descriptions of the sensing element SE, the sensing capacitor C71 and the reference voltage Vref shown in FIG.

The control terminal of the sensing element SE is coupled to the readout control line CL1 of the display panel 110 . The processing circuit 140 can control the sensing element SE via the readout control line CL1. The first end of the sensing capacitor C111 is also coupled to the reset line RL1 of the display panel 110 . The reset line RL1 shown in FIG. 11 can refer to the related description of the reset line RL1 shown in FIG. 9 . During reset, the processing circuit 140 turns off the sensing element SE, and the processing circuit 140 can decharge (reset) the sensing capacitor C111 via the reset line RL1. During the sensing period, the sensing element SE leaks the charge of the sensing capacitor C111 based on the leakage current affected by the second light generated by the quantum dot material QD. During the readout period, the processing circuit 140 turns on the sensing element SE, so the processing circuit 140 can detect the charge amount (sensing result) of the sensing capacitor C111 via the sensing line S1 and the sensing element SE.

12 is a schematic diagram illustrating the signal waveforms of the gate line G1 , the reset line RL1 , the sensing line S1 , the readout control line CL1 and the sensing capacitor C111 shown in FIG. 11 according to an embodiment of the present invention. FIG. 12 shows a plurality of display frame periods, wherein the schematic symbol "F12_1" represents one frame period, the schematic symbol "F12_k+2" represents another frame period, and the schematic symbol "K*F" represents a frame period K frame periods between F12_1 and the frame period. In each frame period, the gate driver 130 scans the gate lines G1 ˜Gn of the display panel 110 (as shown in FIG. 12 ). During the reset period RST, the processing circuit 140 turns off the sensing element SE, and the processing circuit 140 charges the sensing capacitor C111. During the sensing period SEN, the processing circuit 140 continues to turn off the sensing element SE, and the processing circuit 140 stops charging the sensing capacitor C111. Based on the leakage current affected by the second light L2 generated by the quantum dot material QD, the sensing element SE leaks the charge of the sensing capacitor C111 , so that the voltage level of the sensing capacitor C111 continues to decrease during the sensing period SEN. During the readout period RO, the processing circuit 140 continues to stop charging the sensing capacitor C111, and the processing circuit 140 turns on the sensing element SE. Therefore, the processing circuit 140 can detect the charge amount (sensing result) of the sensing capacitor C111 via the sensing line S1 and the sensing element SE during the readout period RO.

FIG. 12 shows a plurality of readout control lines CL1 , CL2 , . . . , CLn. That is, the control terminal (gate) of the sensing element SE of each of the sensing parts SP of the sub-pixels 111-11 to 111-mn is coupled via a corresponding gate line among the readout control lines CL1 to CLn connected to the processing circuit 140 . Although the readout control lines CL2 to CLn are not shown in FIG. 11 , these readout control lines CL2 to CLn can be deduced by referring to the related description of the readout control line CL1 . The arrangement of these readout control lines CL1 ˜ CLn in the display panel 110 can be analogized with reference to the arrangement of the gate lines G1 ˜ Gn. In the frame period "F12_k+2", the processing circuit 140 may scan these readout control lines CL1-CLn (as shown in FIG. 12).

FIG. 13 is a schematic circuit diagram illustrating the sensing part SP shown in FIG. 1 according to another embodiment of the present invention. The sub-pixels 111-11 shown in FIG. 13 can refer to the related description of the sub-pixels 111-11 shown in FIG. 1 . The display part DP shown in FIG. 13 can refer to the related description of the display part DP shown in FIG. 1 , FIG. 2 , FIG. 3 or FIG. The sensing part SP shown in FIG. 13 includes a quantum dot material QD1 (not shown in FIG. 13 ), a sensing element SE1 , a sensing capacitor C131 , a quantum dot material QD2 (not shown in FIG. 13 ), a sensing element SE2 and Sense capacitor C132. According to the actual design, the sensing part SP and the display part DP in the embodiment of FIG. 13 can refer to FIG. 5 or the related description of the sensing part SP and the display part DP in the embodiment of FIG. 6 . The sensing capacitor C131 and/or C132 shown in FIG. 13 can refer to the related description of the blue light sensing capacitor Csen shown in FIG. 5 .

The control terminal of the display part DP, the control terminal of the sensing element SE1 and the control terminal of the sensing element SE2 are commonly coupled to the gate line G1 of the display panel 110 . The first end of the sensing capacitor C131 is coupled to the first end of the sensing element SE1. In the embodiment shown in FIG. 13 , the sensing line S1 includes a sensing line S1_1 and a sensing line S1_2 . The second end of the sensing element SE1 is coupled to the sensing line S1_1 of the display panel 110 . The first end of the sensing capacitor C132 is coupled to the first end of the sensing element SE2. The second end of the sensing element SE2 is coupled to the sensing line S1_2 of the display panel 110 . The second terminal of the sensing capacitor C131 and the second terminal of the sensing capacitor C132 are coupled to the reference voltage Vref. The sensing capacitor C132 and the sensing element SE1 shown in FIG. 13 can refer to the related description of the sensing capacitor C91 and the sensing element SE shown in FIG. 9 , and the sensing capacitor C132 and the sensing element SE2 shown in FIG. 13 can also refer to FIG. 9 The illustrated related description of the sensing capacitor C91 and the sensing element SE.

The first end of the sensing capacitor C131 and the first end of the sensing capacitor C132 are further coupled to the reset line RL1 of the display panel 110 . During the reset period, the sensing element SE1 and the sensing element SE2 are turned off, and the processing circuit 140 can charge (reset) the sensing capacitor C131 and the sensing capacitor C132 via the reset line RL1 .

During the sensing period, the sensing element SE1 and the sensing element SE2 are kept off, and the sensing capacitor C131 and the sensing capacitor C132 are not charged by the reset line RL1 (that is, the processing circuit 140 stops charging the sensing capacitor C131 and the sensing capacitor C132). measuring capacitance C132). The quantum dot material QD1 may be excited by the first blue light component of the first light from the display part 110 to generate the second light. In some embodiments, the quantum dot material QD2 may be excited by the second blue light component of the first light from the display part 110 to generate the third light (as shown in FIG. 14 ). In other embodiments, the quantum dot material QD2 can be excited by ambient light to generate the third light (as shown in FIG. 15 ).

FIG. 14 is a schematic cross-sectional view illustrating the sub-pixels 111 - 11 shown in FIG. 13 according to an embodiment of the present invention. FIG. 14 shows the control element 1420 and the display structure 1430 of the display part DP, and the quantum dot material QD1 , the sensing element SE1 , the quantum dot material QD2 and the sensing element SE2 of the sensing part SP. The display part DP and the sensing part SP shown in FIG. 14 can refer to the related description of the display part DP and the sensing part SP shown in FIG. 1 . The control element 1420 and the display structure 1430 shown in FIG. 14 can be analogized with reference to the related description of the transistor 220 and the light-emitting element 230 shown in FIG. 5 , or the related description of the switch 310 and the liquid crystal capacitor 330 shown in FIG. For the quantum dot material QD and the sensing element SE mentioned in the embodiments shown in FIG. 1 and FIG. 4 , reference may be made to the related descriptions of the quantum dot material QD1 , the quantum dot material QD2 , the sensing element SE1 and the sensing element SE2 shown in FIG. 14 .

The quantum dot material QD1 and the quantum dot material QD2 shown in FIG. 14 may refer to the relevant description of the quantum dot material QD shown in FIG. 5 . The quantum dot material QD1 is discriminative to the first blue light component of the first light L1, and the quantum dot material QD2 is discriminative to the second blue light component of the first light L1, wherein the first blue light component and the The second blue light components each belong to different wavelength ranges. That is, a certain wavelength range (first blue light component) of the first light L1 is easy to excite the quantum dot material QD1, but other wavelength ranges of the first light L1 are not easy (or even impossible) to excite the quantum dot material QD1. Similarly, another specific wavelength range (the second blue light component) of the first light L1 is easy to excite the quantum dot material QD2, but other wavelength ranges of the first light L1 are not easy (or even impossible) to excite the quantum dot material QD2. By the composition modulation of the quantum dot materials QD1 and QD2, the first blue light composition and the second blue light composition can be determined according to actual design. For example, in some embodiments, the first blue light component may belong to a wavelength range of strong damage (for example, a blue light wavelength range of 415-455 nm), and the second blue light component may belong to a wavelength range of weak damage (for example, 455 nm). ~480nm blue light wavelength range).

The quantum dot material QD1 can be excited by the first blue light component of the first light L1 to generate the second light. Wherein, the wavelength of the first blue light component of the first light L1 is different from the wavelength of the second light generated by the quantum dot material QD1. The sensing element SE1 may sense the second light generated by the sub-dot material QD1. The quantum dot material QD2 can be excited by the second blue light component of the first light L1 to generate the third light. Wherein, the wavelength of the second blue light component of the first light L1 is different from the wavelength of the third light generated by the quantum dot material QD2. The sensing element SE2 may sense the third light generated by the sub-dot material QD2. Because the quantum dot materials QD1 and QD2 cover the sensing elements SE1 and SE2, the position of the sensing element SE1 and the position of the sensing element SE2 are both outside the irradiation range of the first light L1.

FIG. 15 is a schematic cross-sectional view illustrating the sub-pixels 111 - 11 shown in FIG. 13 according to another embodiment of the present invention. FIG. 15 shows the control element 1520 and the display structure 1530 of the display part DP, and the quantum dot material QD1 , the sensing element SE1 , the quantum dot material QD2 and the sensing element SE2 of the sensing part SP. The display part DP and the sensing part SP shown in FIG. 15 can refer to the related description of the display part DP and the sensing part SP shown in FIG. 1 . The control element 1520 and the display structure 1530 shown in FIG. 15 can be analogized with reference to the related description of the transistor 220 and the light-emitting element 230 shown in FIG. 5 , or the related description of the switch 310 and the liquid crystal capacitor 330 shown in FIG. For the quantum dot material QD and the sensing element SE mentioned in the embodiments shown in FIG. 1 and FIG. 4 , reference may be made to the related descriptions of the quantum dot material QD1 , the quantum dot material QD2 , the sensing element SE1 and the sensing element SE2 shown in FIG. 15 .

The quantum dot material QD1 and the quantum dot material QD2 shown in FIG. 15 may refer to the relevant description of the quantum dot material QD shown in FIG. 5 . The sensing element SE1, the quantum dot material QD1, the sensing element SE2, and the quantum dot material QD2 shown in FIG. 15 can refer to the correlation of the sensing element SE1, the quantum dot material QD1, the sensing element SE2, and the quantum dot material QD2 shown in FIG. 14 illustrate. Different from the embodiment shown in FIG. 14 , in the embodiment shown in FIG. 15 , the quantum dot material QD2 can be excited by the ambient light Lamb to generate the third light to the sensing element SE2 . The sensing element SE1 and the quantum dot material QD1 shown in FIG. 15 can be deduced by referring to the related description of the sensing element SE and the quantum dot material QD shown in FIG. 5 (or FIG. 6 ).

Please refer to Figure 13. Based on the leakage current influenced by the second light generated by the quantum dot material QD1, the sensing element SE1 leaks the charge of the sensing capacitor C131. Based on the leakage current influenced by the third light generated by the quantum dot material QD2, the sensing element SE2 leaks the charge of the sensing capacitor C132. During the readout period, the sensing capacitor C131 and the sensing capacitor C132 are not charged by the reset line RL1, and the sensing element SE1 and the sensing element SE2 are turned on. Therefore, the processing circuit 140 can detect the charge amount of the sensing capacitor C131 (the first blue light component sensing result) through the sensing line S1_1 and the sensing element SE1, and the processing circuit 140 can detect the charge of the sensing capacitor C131 through the sensing line S1_2 and the sensing element SE2. The charge amount of the sensing capacitor C132 (the second blue light component sensing result) is detected. The processing circuit 140 can compare the first blue light component sensing result with the second blue light component sensing result, or calculate the ratio of the first blue light component sensing result and the second blue light component sensing result.

To sum up, the sensing part SP of the sub-pixel (sub-pixel circuit) includes the quantum dot material QD1 , the sensing element SE1 , the quantum dot material QD2 , and the sensing element SE2 . The quantum dot material QD1 has discrimination against the first blue light component of the first light L1 from the display part DP. The quantum dot material QD1 is excited by the first blue light component of the first light L1 to generate the second light to the sensing element SE1. In some embodiments, the quantum dot material QD2 is discriminative to the second blue light component of the first light L1 from the display portion DP. The quantum dot material QD2 is excited by the second blue light component of the first light L1 to generate a third light to the sensing element SE2. In other embodiments, the quantum dot material QD2 is discriminative to ambient light Lamb. The quantum dot material QD2 is excited by the ambient light Lamb to generate the third light to the sensing element SE2. The processing circuit 140 can instantly know the intensity ratio of the first blue light component and the second blue light component of the first light L1 from the display portion DP (or the intensity ratio of the first light L1 ) according to the sensing results of the sensing elements SE1 and SE2. The intensity ratio of the first blue light component to the ambient light Lamb). That is to say, the display panel 110 can self-sensing a specific component of the display image (eg, the first blue light component) without requiring an additional sensor (external sensor).

Although the present invention has been disclosed above by the embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, The protection scope of the present invention shall be determined by the scope of the appended patent application.

100: Display device 110: Display panel 111-11, 111-12, 111-m1, 111-1n, 111-mn: Subpixels 120: source driver 130: Gate driver 140: Processing circuit 210: Switch 220: Transistor 230: Light-emitting element 310: switch 320: Storage Capacitor 330: Liquid crystal capacitor 610: First substrate side 620: Second substrate side 1420, 1520: Control elements 1430, 1530: Display structure B: Shading structure BM: shading color resist C71, C91, C101, C111, C131, C132: Sensing capacitance CF: Color Filter CL1: read control line D1, Dm: data line DP: Display part F81, F82, F12_1, F12_k+2, K*F: frame period G1, G2, Gn: gate line L1: First Light L2: Second light Lamb: Ambient Light LP: Light Reflective Structure PS: Optical spacer QD, QD1, QD2: Quantum Dot Materials RL1: reset line RO: Readout period RST: reset period S1, S1_1, S1_2, Sm: Sensing lines S410, S420: Steps SE, SE1, SE2: Sensing elements SEN: During sensing SP: Sensing part SW71: Reset switch VCOM: common voltage VDD: Power supply voltage Vref, VSS: reference voltage

FIG. 1 is a schematic diagram of a circuit block of a display device according to an embodiment of the present invention. FIG. 2 is a schematic circuit diagram illustrating the display unit shown in FIG. 1 according to an embodiment of the present invention. FIG. 3 is a schematic circuit diagram illustrating the display unit shown in FIG. 1 according to another embodiment of the present invention. FIG. 4 is a schematic flowchart of a method for operating a display panel according to an embodiment of the present invention. 5 is a schematic cross-sectional view illustrating the sub-pixel shown in FIG. 1 according to an embodiment of the present invention. 6 is a schematic cross-sectional view illustrating the sub-pixel shown in FIG. 1 according to another embodiment of the present invention. FIG. 7 is a schematic circuit diagram illustrating the sensing unit shown in FIG. 1 according to an embodiment of the present invention. 8 is a schematic diagram illustrating signal waveforms of the gate line and the sensing capacitor shown in FIG. 7 according to an embodiment of the present invention. FIG. 9 is a schematic circuit diagram illustrating the sensing unit shown in FIG. 1 according to another embodiment of the present invention. FIG. 10 is a schematic circuit diagram illustrating the sensing unit shown in FIG. 1 according to still another embodiment of the present invention. FIG. 11 is a schematic circuit diagram illustrating the sensing unit shown in FIG. 1 according to still another embodiment of the present invention. 12 is a schematic diagram illustrating signal waveforms of the gate line and the sensing capacitor shown in FIG. 11 according to an embodiment of the present invention. FIG. 13 is a schematic circuit diagram illustrating the sensing unit shown in FIG. 1 according to another embodiment of the present invention. 14 is a schematic cross-sectional view illustrating the sub-pixel shown in FIG. 13 according to an embodiment of the present invention. 15 is a schematic cross-sectional view illustrating the sub-pixel shown in FIG. 13 according to another embodiment of the present invention.

220: Transistor

230: Light-emitting element

DP: Display part

L1: First Light

LP: Light Reflective Structure

QD: Quantum Dot Materials

SE: Sensing element

SP: Sensing part

Claims (18)

A display panel includes a plurality of sub-pixels, at least one of the sub-pixels includes: a display part; a first quantum dot material configured to be excited by a first blue light component of a first light from the display portion to generate a second light; and a first sensing element configured to sense the second light; Wherein a wavelength of the first blue light component of the first light is different from a wavelength of the second light, the first quantum dot material has an identification of the first blue light component of the first light, and the first The blue light component and the second light each belong to different wavelength ranges. The display panel of claim 1, wherein the position of the first sensing element is outside an irradiation range of the first light. The display panel of claim 1, wherein the at least one sub-pixel further comprises: a light reflecting structure adapted to change a direction of a part of the first light; The first quantum dot material is disposed between the light reflecting structure and the first sensing element, and the first quantum dot material is excited by the first blue light component of the part of the first light to generate the second light to the first sensing element; The first quantum dot material covers the first sensing element, and the light reflection structure includes a light-proof layer. The display panel of claim 1, wherein the at least one sub-pixel further comprises: a light-shielding structure disposed on a first substrate side of the display panel, wherein the light-shielding structure includes the first quantum dot material; The first quantum dot material receives a part of the first light from a first direction, and the first quantum dot material generates the second light to the first sensing element in a second direction. The display panel of claim 1, wherein the at least one sub-pixel further comprises: a second quantum dot material configured to be excited by a second blue light component of the first light from the display portion to generate a third light; and a second sensing element configured to sense the third light; wherein a wavelength of the first blue light component of the first light is different from a wavelength of the second light, and a wavelength of the second blue light component of the first light is different from a wavelength of the third light; Wherein the first quantum dot material has a discrimination against the first blue light component of the first light, the second quantum dot material has a discrimination against the second blue light component of the first light, and the first blue light The component and the second blue light component each belong to different wavelength ranges. The display panel according to claim 5, wherein the position of the first sensing element and the position of the second sensing element are both outside an irradiation range of the first light. The display panel of claim 1, wherein the at least one sub-pixel further comprises: a second quantum dot material configured to be excited by an ambient light to generate a third light; and A second sensing element configured to sense the third light. An operation method of a display panel, the display panel includes a plurality of sub-pixels, at least one sub-pixel of the sub-pixels includes a display portion, a first quantum dot material and a first sensing element, the operation method includes: Exciting the first quantum dot material by a first blue light component of a first light from the display portion to generate a second light; and sensing the second light by the first sensing element; Wherein a wavelength of the first blue light component of the first light is different from a wavelength of the second light, the first quantum dot material has an identification of the first blue light component of the first light, and the first The blue light component and the second light each belong to different wavelength ranges. The operation method of claim 8, wherein the at least one sub-pixel further includes a light reflection structure, the light reflection structure includes a light-proof layer, the first quantum dot material covers the first sensing element, and the operation Methods include: changing a direction of a portion of the first light by the light reflecting structure, wherein the first quantum dot material is disposed between the light reflecting structure and the first sensing element; and The first quantum dot material is excited by the first blue light component of the portion of the first light to generate the second light to the first sensing element. The operation method of claim 8, wherein the at least one sub-pixel further includes a light-shielding structure, the light-shielding structure includes the first quantum dot material, and the operation method further includes: receiving a portion of the first light from a first direction by the first quantum dot material, and The second light is generated by the first quantum dot material to the first sensing element in a second direction. The operation method of claim 8, wherein the at least one sub-pixel further includes a second quantum dot material and a second sensing element, and the operation method further includes: Exciting the second quantum dot material by a second blue light component of the first light from the display portion to generate a third light; and sensing the third light by the second sensing element; Wherein a wavelength of the first blue light component of the first light is different from a wavelength of the second light, a wavelength of the second blue light component of the first light is different from a wavelength of the third light, the first light The quantum dot material has a discrimination for the first blue light component of the first light, the second quantum dot material has a discrimination for the second blue light component of the first light, and the first blue light component is different from the second blue light component. The two blue light components each belong to different wavelength ranges. The operation method of claim 8, wherein the at least one sub-pixel further includes a second quantum dot material and a second sensing element, and the operation method further includes: exciting the second quantum dot material by an ambient light to generate a third light; and The third light is sensed by the second sensing element. A sub-pixel of a display panel, comprising: a display portion; and A sensing portion includes a first sensing capacitor, a first quantum dot material and a first sensing element, wherein a first end of the first sensing capacitor is coupled to a first end of the first sensing element a first end, a second end of the first sensing element is coupled to a first sensing line of the display panel, the first quantum dot material is configured to receive a first light from the display part The excitation of the first blue light component generates a second light, the first sensing element is configured to sense the second light, and the second light affects a first leakage current of the first sensing element; Wherein, during a reset period, the first sensing capacitor is charged; during a sensing period, the first sensing element leaks the first sensing capacitor based on the first leakage current affected by the second light and during a readout period, the first sensing element is turned on. The sub-pixel of claim 13, wherein a control end of the display portion and a control end of the first sensing element are jointly coupled to a first gate line of the display panel, and the sensing portion is further include: a reset switch having a first end coupled to the first end of the first sensing capacitor, wherein a second end of the first sensing capacitor is coupled to a reference voltage, a reset switch The second terminal and a data terminal of the display portion are coupled to a first data line of the display panel, and a control terminal of the reset switch is coupled to a second terminal of another sub-pixel of the display panel gate line; Wherein, during the reset period, the reset switch is turned on to charge the first sensing capacitor, and the first sensing element is turned off; during the sensing period, the reset switch and the first sensing element is turned off; and during the readout period, the reset switch is turned off. The sub-pixel of claim 13, wherein a control terminal of the display portion is coupled to a gate line of the display panel, a data terminal of the display portion is coupled to a data line of the display panel, and the first A control end of a sensing element is coupled to a readout control line of the display panel, the first end of the first sensing capacitor is further coupled to a reset line of the display panel, and the first sense A second end of the sensing capacitor is coupled to a reference voltage; wherein, during the reset period, the first sensing capacitor is charged by the reset line, and the first sensing element is turned off; during the sensing period , the first sensing capacitor is not charged by the reset line, and the first sensing element is turned off; and during the readout period, the first sensing capacitor is not charged by the reset line. The sub-pixel of claim 13, wherein a control terminal of the display portion and a control terminal of the first sensing element are jointly coupled to a gate line of the display panel, and a data terminal of the display portion is coupled to Connected to a data line of the display panel, the first end of the first sensing capacitor is also coupled to a reset line of the display panel, and a second end of the first sensing capacitor is coupled to a reference voltage. The sub-pixel of claim 13, wherein the sensing portion further comprises a second sensing capacitor, a second quantum dot material and a second sensing element, a first end of the second sensing capacitor is coupled to connected to a first end of the second sensing element, a second end of the second sensing element is coupled to a second sensing line of the display panel, the second quantum dot material is configured to receive The excitation of a second blue light component of the first light of the display portion generates a third light, the second sensing element is configured to sense the third light, and the third light affects the second sensing A second leakage current of the device, wherein a wavelength of the first blue light component of the first light is different from a wavelength of the second light, and a wavelength of the second blue light component of the first light is different from the third a wavelength of light, the first quantum dot material has a discrimination against the first blue light component of the first light, the second quantum dot material has a discrimination against the second blue light component of the first light, and The first blue light component and the second blue light component belong to different wavelength ranges respectively. The sub-pixel of claim 17, wherein a control end of the display portion, a control end of the first sensing element and a control end of the second sensing element are jointly coupled to a gate of the display panel pole line, a data end of the display part is coupled to a data line of the display panel, the first end of the first sensing capacitor and the first end of the second sensing capacitor are also coupled to the display A reset line of the panel, and a second end of the first sensing capacitor and a second end of the second sensing capacitor are coupled to a reference voltage; wherein, during the reset period, the first sensing The sensing capacitor and the second sensing capacitor are charged by the reset line, and the first sensing element and the second sensing element are turned off; during the sensing period, the first sensing capacitor and the second sensing element The sensing capacitor is not charged by the reset line, the first sensing element and the second sensing element are turned off, and the second sensing element leaks the first sensing element based on the second leakage current affected by the third light The charges of two sensing capacitors; and during the readout period, the first sensing capacitor and the second sensing capacitor are not charged by the reset line, and the second sensing element is turned on.

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