CN110610971B - Electronic device and control method of electronic device - Google Patents
Electronic device and control method of electronic device Download PDFInfo
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- CN110610971B CN110610971B CN201910870201.XA CN201910870201A CN110610971B CN 110610971 B CN110610971 B CN 110610971B CN 201910870201 A CN201910870201 A CN 201910870201A CN 110610971 B CN110610971 B CN 110610971B
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- 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
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- 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
Abstract
The embodiment of the invention discloses electronic equipment and a control method of the electronic equipment. The display screen comprises a plurality of display pixels sharing the same substrate and a distance sensing module, wherein each display pixel comprises a pixel circuit layer and a light-emitting pixel layer which are arranged on the substrate; and the processor is used for realizing the function of the distance sensing module according to the working state of the infrared emission unit and controlling the display compensation mode of the display screen so as to adjust the display effect of the display screen during the simultaneous working period of the infrared emission unit and the light-emitting pixel layer. The invention can improve the performance of the electronic equipment.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to electronic equipment and a control method of the electronic equipment.
Background
The screen occupation ratio of the electronic equipment is always the focus of attention of a user, and generally refers to the ratio of the area of a display screen to the area of a front panel of the electronic equipment. In order to meet the requirement of large screen occupation ratio, the concept of full screen is developed. In order to realize a full screen, a hole may be drilled in the screen and a series of devices such as a sensor may be placed at the drilled position.
However, the performance of existing electronic devices remains to be improved.
Disclosure of Invention
An object of an embodiment of the present invention is to provide an electronic device and a control method of the electronic device, thereby improving performance of the electronic device.
To solve the above technical problem, an embodiment of the present invention provides an electronic device, including: the display screen comprises a plurality of display pixels sharing the same substrate and a distance sensing module, each display pixel comprises a pixel circuit layer and a light-emitting pixel layer which are arranged on the substrate, the distance sensing module comprises a plurality of infrared emission units and a plurality of infrared receiving units, the infrared emission units and the light-emitting pixel layers are arranged on the same layer, the infrared receiving units are positioned below the infrared emission units, and the orthographic projections of the infrared receiving units on the substrate are positioned between the infrared emission units and the light-emitting pixel layers or between different light-emitting pixel layers;
and the processor is used for judging the working state of the infrared emission unit according to the using situation of the electronic equipment, realizing the function of the distance sensing module, and controlling the display compensation mode of the display screen according to the working state of the infrared emission unit so as to adjust the display effect of the display screen during the period that the infrared emission unit and the light-emitting pixel layer work simultaneously.
An embodiment of the present invention further provides a method for controlling an electronic device, which can be used to manufacture the electronic device, and includes: receiving a trigger signal, enabling the infrared emission unit to enter a working state, emitting infrared emergent rays, forming infrared reflection rays after the infrared emergent rays are reflected by an object, and receiving the infrared reflection rays by the infrared receiving unit; according to the state of the infrared reflection light received by the infrared receiving unit, the function of the distance sensing module is realized; and controlling a display compensation mode of the display screen according to the working state of the infrared emission unit so as to adjust the display effect of the display screen during the period that the infrared emission unit and the light-emitting pixel layer work simultaneously.
In addition, the display screen includes a plurality of pixel units, each pixel unit includes a display pixel of a different color and at least one of the infrared emission units, and the light emitting pixel layer includes: first electrode layer, light emitting structure layer and the second electrode layer that stacks gradually, infrared emission unit includes: the infrared light emitting device comprises a third electrode layer, an infrared emitting layer and a fourth electrode layer which are sequentially stacked; preferably, the display pixels include a red sub-pixel, a green sub-pixel, and a blue sub-pixel; preferably, the third electrode layer and the first electrode layer are on the same layer and are made of the same material, and the fourth electrode layer and the second electrode layer are on the same layer and are made of the same material. Therefore, the third electrode layer can be manufactured by utilizing the process step of manufacturing the first electrode layer, and the fourth electrode layer can be manufactured by utilizing the process step of manufacturing the second electrode layer, so that the process steps can be simplified, and the manufacturing cost can be saved.
In addition, the infrared receiving unit comprises an infrared detector and a detecting transistor array connected with the infrared detector, the infrared detector is used for receiving and detecting the infrared reflection light, and the detecting transistor array is used for converting the infrared reflection light signal into an initial electric signal. The infrared detector is used for detecting and receiving infrared reflection light with specific wavelength, and transmitting an optical signal to the detection transistor array, so that the detection transistor array processes the infrared reflection optical signal into an initial electrical signal.
In addition, the electronic device further includes: at least one connecting wire, the connecting wire electrically connects the processor and the plurality of detection transistor arrays and transmits the initial electrical signal to the processor. The electric connection between the processor and the infrared receiving unit is realized through the connecting wire, and the line connection state is simplified.
In addition, the infrared receiving unit and the pixel circuit layer are arranged on the same layer, or the infrared receiving unit is positioned between the substrate and the pixel circuit layer, or the infrared receiving unit is positioned below the substrate; preferably, the infrared transmitting unit corresponds to at least one of the infrared receiving units. The position through designing infrared receiving element can improve electronic equipment's performance, specifically, when infrared receiving element with pixel circuit layer is with layer setting, perhaps infrared receiving element is located the base plate with between the pixel circuit layer, the overall arrangement that the receiver that has changed current sensor independently occupied the one deck to reduce screen thickness, promote the product aesthetic measure, and improved infrared outgoing light and infrared reflection light's transmissivity, improved distance sensor's sensitivity and accuracy, when infrared receiving element is located under the base plate, original sensor receiver has been remain, electronic equipment simple structure, be convenient for prepare and improve the product yield, so, under the prerequisite of guaranteeing that electronic equipment simple structure and not influencing sensor result of use, comprehensive screen has been realized. The infrared transmitting unit corresponds to at least one infrared receiving unit, so that the infrared reflecting light cannot be received due to the fact that a certain infrared receiving unit fails, and the receiving efficiency of the infrared reflecting light is improved.
In addition, the processor is further used for controlling the display screen to perform compensation display in a second compensation mode when the infrared emission unit does not work.
In addition, the processor includes: the judging module is used for judging the working state of the infrared transmitting unit according to the using situation of the electronic equipment; the storage module is used for storing the first compensation parameter and the second compensation parameter; the first compensation module is used for adjusting the display effect of the display screen by adopting the first compensation parameter when the infrared emission unit and the light-emitting pixel layer work simultaneously; the second compensation module is used for adjusting the display effect of the display screen by adopting the second compensation parameter when the infrared emission unit is not in a working state; and the first processing module is used for realizing the function of the distance sensing module when the infrared emission unit works. Because infrared emission unit can influence the normal demonstration of screen when launching infrared emergent ray, is in different operating modes according to infrared emission unit for this reason, controls the display screen and shows the compensation with corresponding mode, guarantees that the screen has good display effect.
In addition, the processor is also used as a driving chip of the display screen, and the display screen further comprises: and the first scanning line and the first data line are used for connecting the driving chip and the infrared emission unit. The processor can also control the switch of the infrared emission unit, the first scanning line is used for selecting the infrared emission unit, and the first data line is used for turning on the selected infrared emission unit.
Compared with the prior art, the technical scheme provided by the embodiment of the invention has the following advantages:
because the infrared emission unit for emitting the infrared emergent light and the light-emitting pixel layer are arranged on the same layer, the infrared emergent light emitted by the infrared emission unit is not easy to irradiate devices in the pixel circuit layer below the infrared emission unit, so that the problem that a switch transistor or a driving transistor in the pixel circuit layer drifts is avoided, the light-emitting pixel layer is prevented from emitting light abnormally, and the display effect of the electronic equipment is improved. Compared with the scheme that the infrared emission unit is arranged below the light-emitting pixel layer, the quantity of infrared emergent rays directly incident on the light-emitting pixel layer is also remarkably reduced, so that the problem of abnormal light emission caused by irradiation of the infrared emergent rays on the light-emitting pixel layer is avoided, and the display effect of the electronic equipment is improved.
Because infrared emission unit can influence the normal demonstration of screen when emitting infrared light, for this reason according to infrared emission unit's operating condition, the demonstration compensation mode of control display screen to during infrared emission unit and the simultaneous working of light emitting pixel layer, the display screen has good display effect all the time. Meanwhile, the infrared receiving unit and the infrared transmitting unit are not arranged on the same layer, so that the infrared receiving unit does not influence the pixel density of the electronic equipment; moreover, the infrared receiving unit and the pixel circuit layer are arranged on the same layer, or the infrared receiving unit is arranged in the substrate, so that an additional substrate is not required to be provided for arranging the infrared receiving unit, and the whole thickness of the electronic device is favorably reduced. The position through designing infrared receiving unit can also improve the screen transmissivity of infrared emergent light and infrared reflection light, improves sensor work efficiency, improves user experience. That is to say, while the preset function can be realized, the abnormal light emission of the light-emitting pixel layer can be avoided, and the electronic equipment is ensured to have thinner thickness and higher working efficiency.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
Fig. 1 is a schematic top view of an electronic device according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of an electronic device according to an embodiment of the invention;
fig. 3 is a schematic diagram of the arrangement of the display pixels and the infrared emission units in the electronic device according to an embodiment of the present invention;
fig. 4 is a schematic view of another arrangement of display pixels and infrared emission units in an electronic device according to an embodiment of the present invention;
FIG. 5 is an enlarged schematic view of the detection transistor array of FIG. 2;
fig. 6 is a schematic diagram of a connection structure of a processor and an infrared transmitting unit and an infrared receiving unit according to an embodiment of the present invention;
fig. 7 is a schematic cross-sectional view of an electronic device according to an embodiment of the invention;
fig. 8 is a schematic cross-sectional view of an electronic device according to an embodiment of the invention;
fig. 9 is a flowchart illustrating a control method of an electronic device according to an embodiment of the present invention.
Detailed Description
The existing electronic equipment has lower performance. Specifically, when a sensor for generating infrared light is disposed below a display screen, the emitted infrared light irradiates a driving device below the screen, and the infrared light has a certain energy, which causes a change in characteristics of transistors in the driving device. The transistors include a switching transistor and a driving transistor, and when the transistor characteristics change, channel characteristics and operating voltages of the switching transistor and the driving transistor change and drift, which causes abnormal light emission of the light-emitting pixel layer. For example, when the transistor is in an abnormal on state, a bright spot may be generated on the screen, and the display effect of the screen is reduced, thereby reducing the use performance of the electronic device, and causing the user experience to be poor.
Therefore, an improved scheme of arranging the display pixels and the infrared emitting unit on the same layer is provided, however, on one hand, a second substrate needs to be additionally provided for placing the infrared receiving unit, so that the thickness of the electronic device is increased, and a transmission path for transmitting infrared reflection light to the infrared receiving unit is increased, so that loss of the infrared reflection light is caused, and the sensitivity and accuracy of the infrared receiving unit are affected; on the other hand, the display pixels and the infrared emission units are arranged on the same layer, and the infrared emergent light emitted by the infrared emission units and the light of the light-emitting pixel units are subjected to crosstalk due to wavelength difference, so that the normal light emission of the light-emitting pixel units is influenced, and the normal display of the display screen is further influenced.
In order to solve the above problem, an embodiment of the present invention provides an electronic device, including: the display screen comprises a plurality of display pixels sharing the same substrate and a distance sensing module, each display pixel comprises a pixel circuit layer and a light-emitting pixel layer which are arranged on the substrate, the distance sensing module comprises a plurality of infrared emission units and a plurality of infrared receiving units, the infrared emission units and the light-emitting pixel layers are arranged on the same layer, the infrared receiving units are positioned below the infrared emission units, and the orthographic projections of the infrared receiving units on the substrate are positioned between the infrared emission units and the light-emitting pixel layers or between the different light-emitting pixel layers;
and the processor is used for judging the working state of the infrared emission unit according to the using situation of the electronic equipment, realizing the function of the distance sensing module, and controlling the display compensation mode of the display screen according to the working state of the infrared emission unit so as to adjust the display effect of the display screen during the period that the infrared emission unit and the light-emitting pixel layer work simultaneously.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments. The following embodiments are divided for convenience of description, and should not constitute any limitation to the specific implementation of the present invention, and the embodiments may be mutually incorporated and referred to without contradiction.
Fig. 1 is a schematic top view of an electronic device according to an embodiment of the present invention, and fig. 2 is a schematic cross-sectional view of the electronic device according to an embodiment of the present invention.
Referring to fig. 1 and 2, in this embodiment, an electronic apparatus 100 includes: the display screen 10, the display screen 10 includes a plurality of display pixels 110 and a distance sensing module 106 sharing a same substrate 101, each display pixel 110 includes a pixel circuit layer 102 and a light-emitting pixel layer 103 disposed on the substrate, the distance sensing module 106 includes a plurality of infrared emission units 104 and a plurality of infrared receiving units 105, the infrared emission units 104 and the light-emitting pixel layers 103 are disposed on the same layer, the infrared receiving units 105 are disposed below the infrared emission units 104, and an orthographic projection of the infrared receiving units 105 on the substrate is located at a gap between the infrared emission units 104 and the orthographic projection of the light-emitting pixel layers 103 on the substrate, so as to ensure a transmittance of infrared reflected light reaching the infrared receiving units;
a processor 107, configured to determine an operating state of the infrared emitting unit 104 according to a usage situation of the electronic device 100, implement the function of the distance sensing module 106, and control a display compensation mode of the display screen 10 according to the operating state of the infrared emitting unit 104, so as to adjust a display effect of the display screen 10 during simultaneous operation of the infrared emitting unit 104 and the light emitting pixel layer 103.
Specifically, the infrared emergent light is reflected by an object located outside the electronic device 100 to form an infrared reflected light, where the object may be an object to be measured, a finger fingerprint, or an object to be positioned, and the processor 107 may implement a function of the distance sensing module, such as a distance measuring function or a positioning function, by using a preset algorithm based on data such as a time difference between a time when the infrared emergent light is emitted and a time when the infrared reflected light is received.
In addition, since the infrared emission unit 104 for emitting the infrared emergent light and the light-emitting pixel layer 103 are disposed on the same layer, the infrared emergent light emitted by the infrared emission unit 104 is not easy to irradiate devices in the pixel circuit layer 102 located below the infrared emission unit, so that the problem of drift of a switching transistor or a driving transistor in the pixel circuit layer 102 is avoided, abnormal light emission of the light-emitting pixel layer 103 is prevented, and the display effect of the electronic device 100 is improved. Moreover, compared with the scheme that the infrared emission unit 104 is disposed below the light-emitting pixel layer 103, the amount of infrared emergent light directly incident on the light-emitting pixel layer 103 is also significantly reduced, so that the problem of abnormal light emission caused by the light-emitting pixel layer 103 being irradiated by the infrared emergent light is avoided, which is also beneficial to improving the display effect of the electronic device 100.
Meanwhile, the infrared receiving unit 105 is located below the light-emitting pixel layer 103, and since the infrared receiving unit 105 is not disposed at the same layer as the infrared emitting unit 104, the infrared receiving unit 105 does not affect the pixel density of the electronic device 100; moreover, the infrared receiving unit 105 is located below the light emitting pixel layer 103, for example, the infrared receiving unit 105 is located in the pixel circuit layer 102 and the substrate 101, and there is no need to provide an additional substrate to provide the infrared receiving unit 105, so that the overall thickness of the electronic device 100 is reduced, specifically, the infrared receiving unit 105 is located at a position of a gap between the infrared emitting unit 104 and the light emitting pixel layer 103 in the orthographic projection on the substrate, and the purpose is that the infrared reflected light is not shielded and reflected again by the infrared emitting unit 104 and the light emitting pixel layer 103, the flux of the infrared receiving unit 105 receiving the infrared reflected light is improved, and further, the working efficiency of the distance sensing module is improved.
Moreover, since the infrared emission unit 104 may affect the normal display of the display screen 10 when emitting the infrared light, the processor 107 controls the display screen 10 to perform display compensation in corresponding modes according to different working modes of the infrared emission unit 103, so as to ensure that the display screen is not affected by the infrared emission unit 104, and thus the display screen has a good display effect all the time.
That is to say, the electronic device 100 provided in this embodiment can avoid the abnormal light emission of the light-emitting pixel layer 103 while implementing the preset function of the distance sensing module, so as to ensure that the electronic device 100 has a thinner thickness, and can perform compensation display to improve the display effect of the display screen 10.
The electronic device provided in the present embodiment will be described in detail below with reference to the drawings.
The electronic device may be a display panel, or may also be a product or a component having a display function, such as a mobile phone, a tablet computer, a television, a display, a digital photo frame, or a navigator. Furthermore, the electronic device may be an OLED electronic device, an LED electronic device, an LCD electronic device, or a Micro-LED electronic device. In this embodiment, an example in which the electronic device is an OLED electronic device is given. The preset function can be a preset fingerprint identification function, a distance measurement function or a positioning function and the like.
The substrate 101 may be a rigid substrate or a flexible substrate. The pixel circuit layer 102 includes transistors, mainly a driving transistor (not shown) and a switching transistor (not shown). The pixel circuit layer 102 functions including: supplying power to the light emitting pixel layer 103 to control the light emitting pixel layer 103 to emit light having a preset color; power is supplied to the infrared emission unit 104 to control the infrared emission unit 104 to emit infrared light.
In this embodiment, the electronic apparatus 100 performs display by using the three primary colors of red, blue, and green. Fig. 3 is a schematic diagram of the position arrangement of the display pixels 110 and the infrared emission units in the electronic device according to an embodiment of the present invention. Fig. 4 is a schematic diagram of another arrangement of the display pixels 110 and the infrared emission units 104 in the electronic device according to the embodiment of the invention. The electronic device 100 comprises a plurality of pixel units, the plurality of pixel units cooperate to perform the functions of the display and the distance sensor, accordingly, with reference to fig. 2 to 4, the display pixel 110 and the at least one infrared emission unit 103 form a single pixel unit, and the display pixel 110 includes: a RED sub-pixel (RED, R) for emitting RED light, a BLUE sub-pixel (BLUE, B) for emitting BLUE light, and a GREEN sub-pixel (GREEN, G) for emitting GREEN light, wherein R denotes the RED sub-pixel, G denotes the GREEN sub-pixel, B denotes the BLUE sub-pixel, and IR denotes an infrared emitting unit in fig. 3 and 4; accordingly, the red, blue, and green sub-pixels and the at least one Infrared emission (IR) unit constitute a single pixel unit. In other embodiments, the electronic device may use other colors of display pixels 110 for display.
Each of the display pixels 110 includes a pixel circuit layer 102 and a light-emitting pixel layer 103 disposed on the substrate.
Specifically, the light-emitting pixel layer 103 includes at least three layers, specifically including: the light emitting device includes a first electrode layer 113, a light emitting structure layer 123, and a second electrode layer 133 stacked in this order.
Specifically, the light emission pattern of the light-emitting pixel layer 103 includes bottom emission and top emission. In this embodiment, the light-emitting pixel layer 103 is a top emission type, and the first electrode layer 113 is an anode and the second electrode layer 133 is a cathode. The material of the first electrode layer 113 includes one or more of ITO, IZO, or Ag; the material of the second electrode layer 133 includes one or more of Mg/Ag alloy, Al, Li, Ca, or In.
The distance sensing module 106 includes a plurality of infrared transmitting units 104 and a plurality of infrared receiving units 105. The distance sensing module 106 is configured to emit infrared emergent light and receive infrared reflected light, so as to implement distance measurement or positioning and other functions related to distance.
The infrared transmitting unit 104 corresponds to at least one of the infrared receiving units 105, so that when a certain infrared receiving unit 105 fails, the receiving of infrared reflection light rays is not affected, and the plurality of infrared receiving units 105 work together, so that the luminous flux of the received infrared reflection light rays is increased, the sensitivity of the electronic device 100 is improved, and the performance of the electronic device 100 is improved.
The infrared emission unit 104 can emit infrared light having a specific wavelength. In this embodiment, the infrared emission unit 104 and the light-emitting pixel layer 103 are disposed on the same layer above the pixel circuit layer 102, and the infrared emergent light emitted by the infrared emission unit 104 directly penetrates through the display screen, so that the infrared emergent light does not irradiate the pixel circuit layer 102 located below the infrared emission unit 104, and the energy of the infrared emergent light is prevented from changing the electrical property of the transistor in the pixel circuit layer 102, thereby preventing the transistor from being abnormally turned on, and solving the problem that the display screen 10 generates light spots.
Specifically, the infrared emission unit 104 includes at least three layers, specifically, a third electrode layer 114, an infrared emission layer 124, and a fourth electrode layer 134, which are sequentially stacked. The material of the infrared emission layer 124 is an organic material capable of emitting infrared light of a specific wavelength, such as aniline derivatives and rare earth metal complexes. Specifically, the third electrode layer 114 and the first electrode layer 113 are in the same layer, and the infrared unit layer 124 and the light emitting unit layer 123 are in the same layer; the fourth electrode layer 134 and the second electrode layer 133 are on the same layer; and the material of the third electrode layer 114 is the same as that of the first electrode layer 113, and the material of the fourth electrode layer 134 is the same as that of the second electrode layer 133. Thus, the third electrode layer 114 can be fabricated by using the process steps for fabricating the first electrode layer 113, and the fourth electrode layer 134 can be fabricated by using the process steps for fabricating the second electrode layer 133, which is beneficial to simplifying the process steps and saving the manufacturing cost.
In this embodiment, the electronic device 100 may further include a retaining wall structure 218, the retaining wall structure 218 surrounds the infrared emission unit 104, and the top of the retaining wall structure 218 is flush with the top of the infrared emission unit 104.
Specifically, the top of the retaining wall structure 218 is flush with the top of the infrared emission unit 104, so that the infrared emergent light 217 can be prevented from side leakage, the light of the light-emitting pixel layer 103 is prevented from interfering with each other, and the normal display effect of the display screen is ensured. In addition, the top of the retaining wall structure 218 is flush with the top of the infrared emission unit 104, which does not cause an increase in the thickness of the electronic device 100. In other embodiments, the top of the retaining wall structure may be higher or lower than the top of the infrared emission unit 104.
Specifically, the material of the retaining wall structure 218 is a light shielding material, and may be, for example, a black matrix material.
The infrared receiving unit 105 is configured to receive the infrared reflected light and convert the infrared reflected light into an initial electrical signal. In the present embodiment, the infrared receiving unit 105 includes: an infrared detector 115, and a detection transistor array (TR array) 125 connected to the infrared detector 115.
Specifically, infrared light of a plurality of wavelengths exists in the external environment of the electronic device, and the infrared detector 115 is configured to detect and receive infrared reflected light having a specific wavelength, receive the infrared reflected light, and transmit an optical signal of the infrared reflected light to the detection transistor array (TR array) 125. In a specific embodiment, to implement the function of the distance sensing module, the infrared detector 115 detects infrared reflected light having a wavelength of 940nm, receives the infrared reflected light, and transmits an optical signal to the detection transistor array (TR array) 125.
Specifically, a detection transistor array (TR array) 125 receives the optical signal delivered by the infrared detector 115 and converts the optical signal into an initial electrical signal.
Specifically, fig. 5 is an enlarged schematic structural diagram of the detecting transistor array (TR array) 125 in fig. 2, in this embodiment, the detecting transistor array (TR array) 125 is a PN junction photodiode, and includes: an N-type semiconductor layer 21 and a P-type semiconductor layer 22 on top of the N-type semiconductor layer 21; a bottom electrode 23 on a bottom surface of the N-type semiconductor layer 21; the top electrode 24 is disposed on the top of the P-type semiconductor layer 22, a portion of the surface of the P-type semiconductor layer 22 is exposed by the top electrode 24, the infrared reflected light is irradiated into the P-type semiconductor layer 22, and an insulating layer (not shown) is further disposed between the top electrode 24 and the top of the N-type semiconductor layer 21. It should be noted that, in other embodiments, the detection transistor array (TR array) 125 may also be a PIN junction photodiode.
Further, the detecting transistor array (TR array) 125 may further process the initial electrical signal, such as filtering and amplifying, to obtain a valid electrical signal, and the detecting transistor array 125 includes at least one transistor.
In this embodiment, the infrared emission unit 104 is powered by a transistor in the pixel circuit layer 102, so that the infrared emission unit 104 emits infrared emergent light; in other embodiments, the detection transistor array may also supply power to the infrared emission unit, so that the infrared emission unit emits infrared emergent light.
In this embodiment, the electronic device 100 further includes a processor 107, configured to determine an operating state of the infrared emitting unit 104 according to a usage situation of the electronic device 100, implement the function of the distance sensing module 106, and control a display compensation mode of the display screen 100 according to the operating state of the infrared emitting unit 104, so as to adjust a display effect of the display screen 100 during a period when the infrared emitting unit 104 and the light emitting pixel layer 103 operate simultaneously.
The processor 107 is connected to the infrared receiving unit 105.
Specifically, when the processor 107 is connected to the detection transistor array 125, as shown in fig. 6, and the infrared receiving unit 105 includes a plurality of detection transistor arrays 125, the electronic device 100 further includes: at least one connection line 110, the connection line 110 being electrically connected to the processor 107, and connecting the plurality of detection transistor arrays 125 to the connection line 110, electrically connecting the processor 107 and the infrared receiving unit 105 through the connection line 110, and transmitting the initial electrical signal to the processor 107.
Specifically, when the infrared reflected light is received by the infrared receiving unit 105, the infrared receiving unit 105 converts the optical signal into an initial electrical signal, and transmits the initial electrical signal to the processor 107, so that the processor 107 performs processing and calculation on the initial electrical signal, and the preset function of the distance sensing module 106 is realized. At this time, the infrared emission unit 104 and the light-emitting pixel layer 103 are simultaneously in a working state, and the first compensation module 127 of the storage module 147 is called to adjust the display effect of the display screen 10 according to the first compensation parameter, so as to ensure the display picture of the display screen 10.
The infrared receiving unit 105 is disposed on the same layer as the pixel circuit layer 102, or the infrared receiving unit 105 is located inside the substrate 101, or the infrared receiving unit 105 is located below the substrate 101.
Further, the infrared receiving unit 105 is located between the infrared emitting unit and the light emitting pixel layer, or between different light emitting pixel layers; specifically, the infrared receiving unit 105 is located at a non-light projection position of the infrared emitting unit 104 and the light emitting pixel layer 103, and it can be considered that a light projection of the infrared receiving unit 105 on the substrate 101 is defined as a first projection, a light projection of the infrared emitting unit 104 on the substrate 101 is defined as a second projection, a light projection of the light emitting pixel layer 103 on the substrate 101 is defined as a third projection, the first projection and the second projection are mutually staggered, and the first projection and the third projection are mutually staggered, where the light projection can be an orthographic projection on the substrate 101, that is, the orthographic projections of the infrared receiving unit 105, the infrared emitting unit 104, and the light emitting pixel layer 103 on the substrate are respectively a first projection, a second projection, and a third projection. Therefore, the infrared reflected light rays are not shielded and reflected by the infrared emission unit 104 and the light-emitting pixel layer 103, and are received by the infrared receiving unit 105 through the gap between the infrared emission unit 104 and the light-emitting pixel layer 103.
In this embodiment, as shown in fig. 2, the infrared receiving unit 105 and the pixel circuit layer 102 are disposed on the same layer, which not only reduces the transmission path of the infrared reflected light and improves the transmittance of the infrared reflected light, thereby improving the accuracy and sensitivity of implementing the preset function, but also is beneficial to reducing the overall thickness of the electronic device 100.
Specifically, the detecting transistor array 125 and the transistors in the pixel circuit layer 102 are disposed on the same layer, so that the detecting transistor array 125 can be manufactured by using a transistor manufacturing process, which is beneficial to saving process steps and reducing process cost. In addition, in the present embodiment, the detection transistor array 125 is located between the infrared detector 115 and the substrate 101, that is, the detection transistor array 125 and the infrared detector 115 are disposed in the pixel circuit layer 102 in the thickness direction of the electronic device 100, so that there is no need to reserve a spatial position in the pixel circuit layer 102 for the infrared detector 115 in the horizontal direction, because the planar size of the electronic device 100 is reduced. Moreover, since the infrared detector 115 is disposed above the detection transistor array 125, the infrared reflected light can be received by the infrared detector 115 more quickly, which is beneficial to reducing the transmission time of the infrared reflected light.
Fig. 7 is a schematic cross-sectional view of an electronic device according to an embodiment of the invention.
As shown in fig. 7, the infrared receiving unit 105 is located between the substrate 101 and the pixel circuit layer 102, for example, the infrared receiving unit 105 is disposed in the substrate 101, and specifically, the infrared detector 115 and the detecting transistor array 125 are located in the substrate 101. In order to reduce the thickness of the infrared receiving unit 105 occupying the substrate 101 as much as possible, in the present embodiment, the infrared detector 115 and the detecting transistor array 125 are disposed in parallel along the surface direction of the substrate 101 in the substrate 101.
In addition, when the electronic device 100 is applied to the flexible display technology, the substrate 101 is a flexible substrate, the substrate 101 includes a first flexible substrate 11 and a second flexible substrate 12 stacked in sequence, and the infrared detector 115 and the detection transistor array 125 are located in the second flexible substrate 11.
Taking the infrared receiving unit 105 as an example, the process steps for manufacturing the infrared receiving unit 105 and the substrate 100 include: forming a first flexible substrate 11; after forming the first flexible substrate 11, an array process (array) is used to fabricate the infrared detector 115 and the detection transistor array 125 on the first substrate 11, and the traces of the infrared receiving unit 105 are led to the bonding area for subsequent electrical connection, such as electrical connection with the processor 107; next, a second flexible substrate 12 is formed on the first flexible substrate 11 to provide a flat surface for facilitating the fabrication of the pixel circuit.
Taking the infrared receiving unit 105 as an example, which is located in a rigid substrate, the process steps for manufacturing the infrared receiving unit 105 and the substrate 100 include: providing a substrate 100; forming an opening in the substrate 100; the infrared detector 115 and the detection transistor array 125 are fabricated in the opening by an array process, and the traces of the infrared receiving unit 105 are led to the bonding area for subsequent electrical connection.
The infrared receiving unit 105 is disposed in the substrate 101, which is not only beneficial to reducing the overall thickness of the electronic device 100, but also beneficial to reducing the space of the pixel circuit layer 102 without the infrared receiving unit 105, so that more space can be provided for the layout of the transistors in the pixel circuit layer 102, which is beneficial to further improving the performance of the electronic device 100.
Fig. 8 is a schematic cross-sectional view of an electronic device according to an embodiment of the invention.
As shown in fig. 8, in other embodiments, the infrared receiving unit 105 is mounted on the second substrate 12 without designing the substrate 101 as the first substrate 11 and the second substrate 12, but the infrared receiving unit 105 is fabricated on the upper surface of the substrate 101 to form the infrared receiving unit layer 111, which is beneficial to simplifying the manufacturing process and increasing the product yield.
In addition, in other embodiments, the infrared receiving unit 105 may also be disposed below the substrate 101, and more specifically, the infrared receiving unit 105 and the pixel circuit layer 102 are located at two opposite sides of the substrate 101. In the case where the infrared receiving unit 105 is located below the substrate 101, the infrared receiving unit 105 may be a sensor, such as a distance sensor or a positioning sensor, built in the electronic apparatus 100, and may be the infrared detector 115 and the detection transistor array 125 described above for the purpose of simplifying the structure. In this embodiment, the electronic device 100 further includes: an encapsulation layer 204 and a cover plate 205.
Specifically, the encapsulation layer is located between the light-emitting pixel layer 103 and the cover plate 205, and the cover plate 205 is located on the light-emitting pixel layer 103. The Encapsulation layer 204 may be a Thin Film Encapsulation (TFE).
Specifically, the cover plate 205 may be a glass or plastic material.
In this embodiment, the processor 107 is further configured to determine an operating state of the infrared emitting unit 104 according to a usage situation of the electronic device 100, implement the function of the distance sensing module 106, and control a display compensation mode of the display screen 100 according to the operating state of the infrared emitting unit 104, so as to adjust a display effect of the display screen 100 during a period in which the infrared emitting unit 103 and the light emitting pixel layer 104 operate simultaneously.
The processor 107 includes a determination module 117, a storage module 147, a first compensation module 127, a second compensation module 137, and a first processing module 157. The judging module 117 is connected to the first compensating module 127, the second compensating module 137 and the first processing module 157, and the storing module 147 is connected to the first compensating module 127 and the second compensating module 137.
Specifically, the determining module 117 is configured to determine an operating state of the infrared emitting unit 104 according to a usage situation of the electronic device, where the operating state includes a light emitting state and a non-light emitting state.
Specifically, the storage module 147 is configured to store a first compensation parameter and a second compensation parameter.
Specifically, when the determining module 117 determines that the infrared emitting unit 104 and the light emitting pixel layer 103 work simultaneously, the first compensating module 127 is triggered to be turned on, and the first compensating module 127 calls a first compensation parameter in the storage module 147 to adjust the display effect of the display screen; when the judgment module 117 judges that the infrared emission unit 104 is not in the working state, the second compensation module 137 is triggered to be started, and the second compensation module 137 calls the second compensation parameter in the storage module 147 to adjust the display effect of the display screen.
More specifically, the first compensation module 127 and the second compensation module 137 respectively store preset compensation data, including luminance compensation data and chrominance compensation data, and call corresponding compensation data to compensate the display screen according to the operating state of the infrared emission unit 104, so as to improve the display effect.
Thus, when the infrared emitting unit 104 operates, the electronic device 100 switches Gamma data for compensation display through the processor 107, so as to achieve the purpose of compensating the display screen by adopting different compensation modes, and improve the display effect of the electronic device 100.
The first processing module 157 is configured to implement the function of the distance sensing module 106 during the operation of the infrared emitting unit 104. The distance sensing module is used for processing data of the infrared transmitting unit 104 and the infrared receiving unit 105 and realizing the function of the distance sensing module by using a preset algorithm.
In addition, the processor 107 may also be used as a driving chip of the display screen 100, and is configured to control whether the infrared emitting unit 104 emits infrared emergent light, that is, whether the infrared emitting unit 104 is in a working state. Referring to fig. 6, the display screen 100 further includes: a first scanning line 108 and a first data line 109 for connecting the driving chip with the infrared emission unit 104.
Specifically, the first scan line 108 is used for selecting the infrared emission unit 104, and when a certain infrared emission unit 104 is selected, the infrared emission unit 104 emits infrared emergent light based on data transmitted by the first data line 109.
The first data line 109 is connected to the infrared emission unit 104, and the infrared emission unit 104 is in an operation state during the data transmission from the first data line 109 to the infrared emission unit 104. Specifically, the infrared emission unit 104 is controlled by a driving chip, and when the infrared emission unit 104 starts to operate, the driving chip controls the first data line 109 to start transmitting data to the infrared emission unit 104.
The processor 107 is connected to the first data line 109, and specifically, the first processing module 157 is connected to the first data line 109. When the processor 107 detects that the infrared emission unit 104 starts to work, that is, when the processor 107 detects that the data line starts to transmit data to the infrared emission unit 104, the first compensation module 127 is switched to perform compensation display on the display screen, so that the display effect of the display screen is adjusted, and the infrared emergent light is prevented from influencing the display effect; when the processor 107 detects that the first data line 109 stops transmitting data to the infrared transmitting unit 104, the second compensation module 137 is switched to perform compensation display on the display screen.
In the technical scheme of the electronic device provided by this embodiment, the light-emitting pixel layer 103 and the infrared emission unit 104 are arranged above the pixel circuit layer 102 on the same layer, the infrared emergent light emitted by the infrared emission unit 104 can directly penetrate through the display screen, and therefore cannot irradiate the pixel circuit layer 102 located below the infrared emission unit 104, the electrical performance of the transistor in the pixel circuit layer 102 is prevented from being changed by the energy carried by the infrared emergent light, thereby avoiding abnormal opening of the transistor, thereby avoiding the problem of abnormal light emission of the light-emitting pixel layer 103, solving the problems of light spots and display jitter of the display screen, and improving the display effect of the electronic device 100. And, the processor 107 receives the infrared reflection light of the infrared emergent light, and can implement a predetermined function, such as a distance measuring function or a positioning function.
In addition, the light emitting pixel layer 103 and the infrared emission unit 104 are disposed on the same layer, and when the infrared emission unit 104 emits infrared light, normal display of the screen is affected, so that the display screen 100 is controlled by the processor 107 to perform display compensation in a corresponding mode according to different working modes of the infrared emission unit 104, and the screen display is not affected by the infrared emission unit 104, thereby having a good display effect all the time. Meanwhile, the infrared receiving unit and the infrared transmitting unit are not arranged on the same layer, so that the infrared receiving unit does not influence the pixel density of the electronic equipment; moreover, the infrared receiving unit and the pixel circuit layer are arranged on the same layer, or the infrared receiving unit is arranged in the substrate, so that an additional substrate is not required to be provided for arranging the infrared receiving unit, and the whole thickness of the electronic device is favorably reduced. The position of the infrared receiving unit 104 can be designed to improve the screen transmittance of infrared emergent rays and infrared reflected rays, improve the working efficiency of the sensor and improve the user experience. That is to say, while the preset function can be realized, the abnormal light emission of the light-emitting pixel layer can be avoided, and the electronic equipment is ensured to have thinner thickness and higher working efficiency.
For the scheme of placing the infrared receiving unit 105 below the substrate 101, the structure is simple, and the cost is saved. For the scheme of disposing the infrared receiving unit 105 in the pixel circuit layer 102, on one hand, the overall thickness of the electronic device can be reduced, on the other hand, the transmittance of the infrared reflected light in the electronic device 100 can be improved, the sensitivity and accuracy of the infrared receiving unit 105 for receiving the infrared reflected light are improved, and the performance of the electronic device is further improved.
In addition, the infrared receiving unit 105 can be disposed inside the substrate 101, which not only reduces the overall thickness of the electronic device, but also allows more flexible layout of the transistors in the pixel circuit layer 102, thereby further improving the performance of the electronic device 100.
In addition, the processor 107 can also control the display screen to perform compensation display in different compensation modes based on whether the infrared emission unit 104 is in a working state, so that interference caused by red infrared emergent rays or infrared reflected rays on display of the display screen is reduced, and the display screen is guaranteed to have a good display effect all the time.
It should be noted that, all the modules referred to in the foregoing embodiment are logical modules, and in practical applications, one logical unit may be one physical unit, may be a part of one physical unit, and may be implemented by a combination of multiple physical units. In addition, in order to highlight the innovative part of the present invention, elements that are not so closely related to solving the technical problems proposed by the present invention are not introduced in the present embodiment, but this does not indicate that other elements are not present in the present embodiment.
Correspondingly, the embodiment of the invention also provides a control method of the electronic equipment, which can be applied to the electronic equipment. The following describes in detail a control method of an electronic device according to an embodiment of the present invention with reference to the accompanying drawings, and reference may be made to the detailed description of the above embodiment for the same or corresponding parts, and no further details are given here.
Fig. 9 is a flowchart illustrating a control method of an electronic device according to an embodiment of the present invention.
Referring to fig. 9, the control method of the electronic device includes:
and step S1, receiving a trigger signal to enable the infrared emission unit to enter a working state, emitting infrared emergent rays, forming infrared reflection rays after the infrared emergent rays are reflected by an object, and receiving the infrared reflection rays by the infrared receiving unit.
During the operating condition, infrared emission unit launches infrared emergent ray, provides the condition for realizing predetermineeing the function, should predetermineeing the function and can be for predetermineeing locate function and predetermineeing the range finding function.
The infrared emission unit is connected with the processor through a first scanning line and a first data line, the first scanning line is used for selecting the infrared emission unit, the first data line transmits data to the selected infrared emission unit, the infrared pixel unit is controlled to start working, and the infrared pixel unit is controlled to start working when the data is transmitted; the infrared receiving unit is connected with the processor through a connecting wire, the infrared receiving unit converts optical signals into electric signals after receiving infrared reflection light rays, and data are transmitted to the processor through the connecting wire.
And step S2, according to the state of the infrared reflection light received by the infrared receiving unit, realizing the function of the distance sensing module.
An infrared detector in the infrared receiving unit receives infrared reflected light and transmits an optical signal to a detection transistor array, and the detection transistor array converts the infrared emitted light into an initial electrical signal; the processor receives data from the infrared receiving unit through the connecting line and receives data from the infrared transmitting unit through the first data line. And the processor processes the data according to a built-in algorithm to realize preset functions of ranging, positioning and the like.
And step S3, controlling a display compensation mode of the display screen according to the working state of the infrared emission unit so as to adjust the display effect of the display screen during the period that the infrared emission unit and the light-emitting pixel layer work simultaneously.
The control method further comprises the following steps: when the infrared emission unit is in a working state, the processor controls the display screen to perform compensation display in a first compensation mode; and when the infrared emission unit is not in a working state, the processor controls the display screen to perform compensation display in a second compensation mode. So, during infrared emission unit is in operating condition, take corresponding first compensation mode to compensate the demonstration to reduce the interference that infrared outgoing light or infrared reflection light caused to the display screen, guarantee that the display screen has good display effect. Meanwhile, when the infrared emission unit is not in a working state, a corresponding second compensation mode is adopted for compensation display, and the display screen is guaranteed to have a good display effect during the period that the infrared emission unit is not in working.
Specifically, the infrared emission unit is connected with a first scanning line and a first data line, the first scanning line is used for selecting the infrared emission unit, the first data line transmits data to the selected infrared emission unit and controls the infrared pixel unit to start working, and the processor controls the display compensation mode of the display screen according to the working state of the infrared emission unit so as to adjust the display effect of the display screen during the period that the infrared emission unit and the light-emitting pixel layer work simultaneously.
And controlling a display compensation mode of the display screen according to the working state of the infrared emission unit so as to adjust the display effect of the display screen during the period that the infrared emission unit and the light-emitting pixel layer work simultaneously.
Controlling to start working when transmitting data; the processor is connected with the data line. When the processor detects that the data line starts to transmit data, the processor switches the first compensation mode to compensate the display screen, so that the display screen performs compensation display in the first compensation mode; when the processor detects that the data line stops transmitting data, the processor switches the second compensation mode to compensate the display screen, so that the display screen performs compensation display in the second compensation mode.
Specifically, the processor records the occurrence time of the infrared emergent light and the receiving time of the infrared reflected light, combines the information of the infrared reflected light received by the infrared receiving unit, and utilizes a corresponding algorithm in the processor to realize the functions of distance measurement, positioning or fingerprint identification and the like.
According to the control method provided by the embodiment, while the infrared transmitting unit, the infrared receiving unit and the processor are used for realizing the preset function, different compensation modes are switched to compensate the display screen when the infrared transmitting unit is in the working state and is not in the working state, so that the display screen is ensured to have a good display effect all the time, and the performance of the electronic equipment is improved.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific embodiments for practicing the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.
Claims (11)
1. An electronic device, comprising:
the display screen comprises a plurality of display pixels sharing the same substrate and a distance sensing module, each display pixel comprises a pixel circuit layer and a light-emitting pixel layer which are arranged on the substrate, the distance sensing module comprises a plurality of infrared emission units and a plurality of infrared receiving units, the infrared emission units and the light-emitting pixel layers are arranged on the same layer, the infrared receiving units are positioned below the infrared emission units, and the orthographic projections of the infrared receiving units on the substrate are positioned between the infrared emission units and the light-emitting pixel layers or between different light-emitting pixel layers;
the processor is used for judging the working state of the infrared emission unit according to the using situation of the electronic equipment, realizing the function of the distance sensing module and controlling the display compensation mode of the display screen according to the working state of the infrared emission unit so as to adjust the display effect of the display screen during the period that the infrared emission unit and the light-emitting pixel layer work simultaneously;
the processor is further used for controlling the display screen to perform compensation display in a second compensation mode when the infrared emission unit does not work;
the processor includes: the judging module is used for judging the working state of the infrared transmitting unit according to the using situation of the electronic equipment; the storage module is used for storing the first compensation parameter and the second compensation parameter; the first compensation module is used for adjusting the display effect of the display screen by adopting the first compensation parameter when the infrared emission unit and the light-emitting pixel layer work simultaneously; the second compensation module is used for adjusting the display effect of the display screen by adopting the second compensation parameter when the infrared emission unit is not in a working state; and the first processing module is used for realizing the function of the distance sensing module when the infrared emission unit works.
2. The electronic device of claim 1, wherein the display screen comprises a plurality of pixel cells, each pixel cell comprising a display pixel of a different color and at least one of the infrared emitting cells, the light emitting pixel layer comprising: first electrode layer, light emitting structure layer and the second electrode layer that stacks gradually, infrared emission unit includes: the infrared light emitting device comprises a third electrode layer, an infrared emitting layer and a fourth electrode layer which are sequentially stacked.
3. The electronic device of claim 2, wherein the display pixels comprise red, green, and blue subpixels.
4. The electronic device according to claim 2, wherein the third electrode layer and the first electrode layer are on a same layer and are of a same material, and wherein the fourth electrode layer and the second electrode layer are on a same layer and are of a same material.
5. The electronic device according to claim 1, wherein the infrared receiving unit includes: the infrared detector and with the detection transistor array that the infrared detector is connected, the infrared detector is used for receiving and detecting infrared reflection light, the detection transistor array is used for with the light signal of infrared reflection light turns into initial signal of telecommunication.
6. The electronic device of claim 5, further comprising: at least one connection line electrically connected to the processor and the plurality of detection transistor arrays and passing the initial electrical signal to the processor.
7. The electronic device according to claim 5, wherein the infrared receiving unit is disposed on the same layer as the pixel circuit layer, or the infrared receiving unit is located between the substrate and the pixel circuit layer, or the infrared receiving unit is located below the substrate.
8. The electronic device according to claim 7, wherein the infrared transmitting unit corresponds to at least one of the infrared receiving units.
9. The electronic device of claim 1, wherein the processor further functions as a driver chip for the display screen, and wherein the display screen further comprises: and the first scanning line and the first data line are used for connecting the driving chip and the infrared emission unit.
10. A control method of an electronic device, applied to the electronic device according to any one of claims 1 to 9, comprising:
receiving a trigger signal, enabling the infrared emission unit to enter a working state, emitting infrared emergent rays, forming infrared reflection rays after the infrared emergent rays are reflected by an object, and receiving the infrared reflection rays by the infrared receiving unit;
according to the state of the infrared reflection light received by the infrared receiving unit, the function of the distance sensing module is realized;
and controlling a display compensation mode of the display screen according to the working state of the infrared emission unit so as to adjust the display effect of the display screen during the period that the infrared emission unit and the light-emitting pixel layer work simultaneously.
11. The method for controlling an electronic device according to claim 10, wherein the controlling the display compensation mode of the display screen according to the operating state of the infrared emission unit specifically comprises:
when the infrared emission unit and the light-emitting pixel layer are simultaneously in a working period, adjusting the display effect of the display screen by adopting a first compensation parameter;
and when the infrared emission unit is not in a working state, adjusting the display effect of the display screen by adopting a second compensation parameter.
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| CN112420800B (en) * | 2020-11-25 | 2022-12-30 | 维沃移动通信有限公司 | Display module and electronic equipment |
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