CN115588366A - Display module, display driving method thereof and display device - Google Patents

Display module, display driving method thereof and display device Download PDF

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Publication number
CN115588366A
CN115588366A CN202211215357.2A CN202211215357A CN115588366A CN 115588366 A CN115588366 A CN 115588366A CN 202211215357 A CN202211215357 A CN 202211215357A CN 115588366 A CN115588366 A CN 115588366A
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CN
China
Prior art keywords
display
display panel
display module
light
flexible cover
Prior art date
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Pending
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CN202211215357.2A
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Chinese (zh)
Inventor
李莎莎
周军
徐翠
朱修剑
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kunshan Govisionox Optoelectronics Co Ltd
Hefei Visionox Technology Co Ltd
Original Assignee
Kunshan Govisionox Optoelectronics Co Ltd
Hefei Visionox Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Kunshan Govisionox Optoelectronics Co Ltd, Hefei Visionox Technology Co Ltd filed Critical Kunshan Govisionox Optoelectronics Co Ltd
Priority to CN202211215357.2A priority Critical patent/CN115588366A/en
Publication of CN115588366A publication Critical patent/CN115588366A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
    • G09F9/335—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes being organic light emitting diodes [OLED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/03—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes specially adapted for displays having non-planar surfaces, e.g. curved displays
    • G09G3/035—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes specially adapted for displays having non-planar surfaces, e.g. curved displays for flexible display surfaces
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/105—Controlling the light source in response to determined parameters
    • H05B47/11—Controlling the light source in response to determined parameters by determining the brightness or colour temperature of ambient light
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/03—Covers

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Hardware Design (AREA)
  • Optics & Photonics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The invention discloses a display module, a display driving method thereof and a display device. The display module assembly includes: the display panel is provided with a folding area and a non-folding area; the flexible cover plate is arranged on the light emergent side of the display panel; the display module assembly still includes: a light sensor disposed at the fold region of the display panel, the light sensor configured to detect optical data of ambient light; a control module configured to adjust the brightness of the display panel in the folded area and/or the unfolded area according to the optical data of the ambient light. The invention can improve the influence of the wrinkle phenomenon on the display effect.

Description

Display module, display driving method thereof and display device
Technical Field
The invention relates to the technical field of display, in particular to a folding display module, a display driving method of the folding display module and a display device of the folding display module.
Background
Along with the development of display technology, display module assembly, if have the display module assembly of folding function's application also more and more extensive, corresponding requirement to display module assembly also is higher and higher.
However, the display module with folding function can be folded many times or placed for a long time, and the screen can generate an irreversible wrinkle phenomenon, which seriously affects the display effect.
Disclosure of Invention
The invention provides a display module, a display driving method thereof and a display device, which are used for improving the influence of a wrinkle phenomenon on a display effect.
According to an aspect of the present invention, there is provided a display module, including:
the display panel is provided with a folding area and a non-folding area;
the flexible cover plate is arranged on the light emergent side of the display panel;
a light sensor disposed between the flexible cover sheet and the display panel or integrated in the display panel, the light sensor configured to detect optical data of ambient light;
a control module configured to adjust the brightness of the display panel in the folded area and/or the unfolded area according to the optical data of the ambient light.
Optionally, in the fold area, the control module weakens the visual wrinkle depth by parsing the optical data of the ambient light and giving diffuse reflection compensation at different positions of the fold area.
Optionally, the light sensor is disposed within the fold region.
Optionally, the display module further comprises an adhesive layer;
the light sensor is embedded in the adhesive layer and used for limiting the relative position of the light sensor and the display panel.
Optionally, the adhesive layer includes a first sub-adhesive layer and a second sub-adhesive layer, and the light sensor is disposed between the first sub-adhesive layer and the second sub-adhesive layer in a direction parallel to the display panel;
or, a groove is formed in one surface, close to the flexible cover plate, of the bonding layer, and the optical sensor is arranged in the groove.
Optionally, a diffuse reflection material layer is disposed on a side of the flexible cover plate away from or close to the display panel.
Optionally, the diffuse reflection material layer is only arranged on the part of the flexible cover plate corresponding to the non-folding area of the display panel; or the whole surface of the diffuse reflection material layer covers the flexible cover plate.
Optionally, the light sensor includes a plurality of light sensing transistors, and a light shielding material is disposed on a side of an active layer of each light sensing transistor, the side being close to the display panel.
Optionally, the display module further includes a supporting layer disposed on a side of the display panel away from the flexible cover plate;
the support layer includes a support structure corresponding to a non-folding region of the display panel, and a folding structure corresponding to a folding region of the display panel.
According to another aspect of the present invention, a display driving method of a display module is provided for driving the display module, the display driving method includes:
the light sensor detects optical data of ambient light;
the control module adjusts the brightness of the folding area and/or the non-folding area of the display panel according to the optical data of the ambient light. According to another aspect of the present invention, a display device is provided, which includes the above display module.
According to the technical scheme of the embodiment of the invention, the adopted display module comprises: the display panel is provided with a folding area and a non-folding area; the flexible cover plate is arranged on the light emergent side of the display panel; a light sensor disposed between the flexible cover sheet and the display panel or integrated in the display panel, the light sensor configured to detect optical data of ambient light; and the control module is configured to adjust the brightness of the folding area and/or the non-folding area of the display panel according to the optical data of the ambient light. The optical sensor feeds back the optical data of the detected ambient light to the control module, and the control module adjusts the light emitting brightness of the display panel, so that the light emitted by the display panel and entering the human eyes through the flexible cover plate in different areas of the display module is the same as the ambient light reflected into the human eyes after being superposed, and further the user cannot watch the obvious wrinkle phenomenon, thereby greatly improving the display effect.
It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present invention, nor do they necessarily limit the scope of the invention. Other features of the present invention will become apparent from the following description.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram illustrating ambient light reflection when a display module is not folded according to the prior art;
FIG. 2 is a schematic diagram illustrating ambient light reflection when a display module is folded according to the prior art;
fig. 3 is a schematic structural diagram of a display module according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another display module according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another display module according to an embodiment of the present invention;
fig. 6 is a schematic circuit structure diagram of a light sensing circuit according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another display module according to an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of another display module according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of another display module according to an embodiment of the present invention;
fig. 10 is a flowchart of a display driving method of a display module according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
As mentioned in the background art, the wrinkle phenomenon of the existing display module can seriously affect the display effect, and the inventor has found through careful study that the reason for the technical problem is that:
fig. 1 is a schematic view illustrating reflection of ambient light when a display module according to the prior art is not folded, and fig. 2 is a schematic view illustrating reflection of ambient light when a display module according to the prior art is folded, and with reference to fig. 1 and fig. 2, the display module includes a display panel 101' and a cover plate 102', and the display panel 101' has a folding region FF and a non-folding region NF. When no wrinkles occur, the surface of the cover plate 102' is a flat surface, the reflection of the folding area and the non-folding area to the external environment light is mirror reflection, and the effect observed by a user is the same; when the folds exist, the part of the cover plate 102' corresponding to the folding area will generate folds, and the reflection of the ambient light becomes diffuse reflection; the part of the cover plate 102' corresponding to the non-folding area is still a flat surface, and the reflection to the ambient light is still a mirror reflection; this kind of difference leads to the different position light intensity of the display module that the user watched inconsistent, also has the phenomenon that the colour depth differs to seriously influence the display effect of display module.
In order to solve the technical problems, the invention provides the following solutions:
fig. 3 is a schematic structural diagram of a display module according to an embodiment of the present invention, and referring to fig. 3, the display module includes: a display panel 101, the display panel 101 being provided with a folding region FF and a non-folding region NF; a flexible cover plate 102 disposed on the light exit side of the display panel 101; a light sensor 103 disposed in the folding region FF of the display panel 101, the light sensor 103 being configured to detect optical data of ambient light; and the control module is configured to adjust the brightness of the folding area and/or the non-folding area of the display panel according to the optical data of the ambient light.
Specifically, the display panel 101 is a flexible display panel, such as an OLED (Organic Light Emitting Diode) display panel; the display panel may specifically include a driving circuit layer, a light emitting functional layer, a cathode layer, etc., and the specific film structure and light emitting principle thereof are well known to those skilled in the art and will not be described herein again. Although the display panel 101 has the folding region FF and the non-folding region NF, in fig. 3, the display panel 101 includes one folding region FF and the folding region FF is located in the middle of the display panel 101, those skilled in the art will understand that the folding region FF of the display panel 101 may have at least two positions, and the positions may be other than the middle position. The flexible cover 102 is used to protect the display panel 101, and the flexible cover 102 may be, for example, PI (polyimide).
In this embodiment, a light sensor 103 is disposed between the flexible cover sheet 102 and the display panel 101; the light sensor 103 can detect optical data of external ambient light, specifically, optical data of ambient light entering the display module after passing through the flexible cover plate 102 from a side of the mobile phone screen viewed by a user, where the optical data may include, for example, brightness and CIE; when the part of the flexible cover plate 102 corresponding to the folding area has wrinkles, the part corresponding to the non-folding area is specular reflection for the ambient light, and the part corresponding to the folding area is diffuse reflection for the ambient light; the optical data of the partially transmitted ambient light corresponding to the folded area and the optical data of the partially transmitted ambient light corresponding to the unfolded area of the flexible cover are different; the optical sensor feeds back the optical data of the detected ambient light to the control module, and the control module adjusts the light emitting brightness of the display panel, so that the light emitted by the display panel and entering the human eyes through the flexible cover plate in different areas of the display module is the same as the ambient light reflected into the human eyes after being superposed, and further the user cannot watch the obvious wrinkle phenomenon, thereby greatly improving the display effect.
In addition, in this embodiment, preferably, the optical sensor 103 is disposed between the flexible cover plate 102 and the display panel 101, and the external environment light can enter the optical sensor 103 without passing through other film layers after entering the display module, so that the optical sensor 103 can more accurately detect the difference of the external environment light, and further the accuracy of the determination of the control module is improved.
Alternatively, fig. 4 is a schematic structural diagram of another display module according to an embodiment of the present invention, in this embodiment, the light sensor 103 may be disposed on a side of the display panel 101 away from the flexible cover plate 102, and the light sensor 103 is disposed corresponding to the folding region FF.
Or, in some other embodiments, as shown in fig. 5, fig. 5 is a schematic structural diagram of another display module according to an embodiment of the present invention, in this embodiment, the optical sensor 103 may be integrated inside the display panel 101, and specifically, may be disposed on a side of the light-emitting functional layer of the display panel away from the flexible cover plate or a side of the light-emitting functional layer of the display panel close to the flexible cover plate, so that the integration enables the manufacturing process to be relatively simple, the optical sensor can be embedded well in the process of manufacturing the screen body, and no additional process is required after the screen body is manufactured, and meanwhile, the display panel can be relatively thin after the optical sensor is added, which helps the display screen to be light and thin, and the optical sensor can also better collect ambient light, thereby improving the accuracy of the determination of the control module.
The technical scheme of this embodiment, the display module assembly who adopts includes: the display panel is provided with a folding area and a non-folding area; the flexible cover plate is arranged on the light emergent side of the display panel; the optical sensor is arranged between the flexible cover plate and the display panel and is configured to detect optical data of ambient light entering the display module through the flexible cover plate; and the control module is configured to adjust the brightness of the folding area and the brightness of the non-folding area of the display panel according to the optical data of the ambient light so as to enable the observed brightness of the folding area to be consistent with the observed brightness of the non-folding area. The optical sensor feeds back the optical data of the detected ambient light to the control module, and the control module adjusts the light emitting brightness of the display panel, so that the light emitted by the display panel and entering the human eyes through the flexible cover plate in different areas of the display module is the same as the ambient light reflected into the human eyes after being superposed, and further the user cannot watch the obvious wrinkle phenomenon, thereby greatly improving the display effect.
In this embodiment, the display effect is further improved in the folding region, and the control module provides diffuse reflection compensation at different positions of the folding region FF by analyzing the optical data of the ambient light, so that the light emitted from the folding region FF is uniform, and the visible wrinkle depth is weakened.
For example, the optical sensor may include a plurality of optical sensing circuits, fig. 6 is a schematic circuit structure diagram of an optical sensing circuit according to an embodiment of the present invention, and referring to fig. 6, the optical sensing circuit includes a first transistor M1, a second transistor M2, and a storage capacitor C, a first terminal of the first transistor M1 is connected to a first voltage signal Vsense, and a control terminal of the first transistor M1 is connected to a second voltage signal Vg; the first end of the second transistor M2 is electrically connected to the second end of the first transistor M1, the second end of the second transistor M2 is used as the output terminal Vout of the photo-sensing circuit, and the control terminal of the second transistor M2 is connected to the Scan signal Scan. The first end of the storage capacitor C is electrically connected to the second end of the first transistor M1, and the second end of the storage capacitor C is connected to the second voltage signal Vg. The first transistor M1 is a photosensitive transistor, and when the light intensity irradiated on the active layer of the first transistor M1 is different, the threshold voltage of the first transistor M1 is also different, so that the current flowing through the first transistor M1 is also different; the second transistor M2 is a switching transistor, and is controlled by the Scan signal Scan to be turned on or off; the storage capacitor C stores the induced voltage generated by the first transistor M1, and outputs the induced voltage to the output terminal Vout of the photo-sensing circuit when the second transistor M2 is turned on, thereby completing the photo-sensing process. Of course, in some other embodiments, the light sensing circuit may have other structures, and this is not particularly limited in this embodiment of the present invention.
Exemplarily, with continued reference to fig. 3, the display module further includes a supporting layer disposed on a side of the display panel 101 away from the flexible cover plate 102; the support layer includes a support structure 105 corresponding to a non-folding area of the display panel, and a folding structure 104 corresponding to a folding area of the display panel. In particular, the support structure 105 in the support layer has a supporting function, and may be a steel sheet or the like, for example; the folding structure 104 can be folded, so that the folding function can be completed by matching with the display module.
Alternatively, with continued reference to fig. 3, the projection of the light sensor 103 covers the projection of the folding area FF of the display panel in the thickness direction of the display module, i.e. the light sensor 103 is arranged within the folding area FF.
In particular, since the portion of the flexible cover sheet 102 corresponding to the folding region FF of the display panel is most likely to wrinkle; the other area parts of the flexible cover plate 102 are not easy to wrinkle; therefore, the light sensor 103 is arranged corresponding to the folding region FF, so that the light sensor 103 can better detect the ambient light entering from the portion of the flexible cover plate 102 corresponding to the folding region, and the control module can more accurately adjust the brightness of the light emitted by each portion of the display panel.
Optionally, with continued reference to fig. 3, the display module further includes an adhesive layer 106, the adhesive layer 106 is in the same layer as the optical sensor 103, or the optical sensor 103 is embedded in the adhesive layer 106, and the adhesive layer 106 is used to limit the positions of the optical sensor 103 and the display panel 101.
Specifically, the adhesive layer 106 may be made of, for example, an optical adhesive, may adhere the display panel 101 and the flexible cover plate 102 together, may play a role of protection, and may define a relative position of the light sensor 103 and the display panel 101.
Illustratively, as shown in fig. 3, the adhesive layer 106 includes a first sub-adhesive layer and a second sub-adhesive layer, and the light sensor is disposed between the first sub-adhesive layer and the second sub-adhesive layer in a direction parallel to the display panel.
Specifically, in the present embodiment, the light sensor 103 is in contact with and fixedly connected to the first sub adhesive layer and the second sub adhesive layer; the first sub-adhesive layer and the second sub-adhesive layer can fix not only the flexible cover sheet 102 and the display panel 101 together but also the photo sensor 103. In addition, in the structure of the embodiment, the optical sensor 103 and the adhesive layer 106 can be directly fabricated on the display panel 101, and the overall film structure of the display module is thinner, which is beneficial to the lightness and thinness of the display module.
In other embodiments, as shown in fig. 7, fig. 7 is a schematic structural diagram of another display module according to an embodiment of the present invention, in this embodiment, a groove is disposed on a surface of the adhesive layer 106 close to the flexible cover plate 102, and the optical sensor 103 is disposed in the groove.
Specifically, in the present embodiment, the light sensor 103 and the display panel 101 are not in direct contact, but are spaced by a portion of the adhesive layer 106, so that the contact portion between the light sensor 103 and the adhesive layer is larger, and the light sensor 103 is better fixed.
In addition, in some preferred embodiments, each of the photo-sensing circuits includes a photo-sensing transistor, wherein when the photo-sensing circuit has the structure shown in fig. 6, the photo-sensing transistor is a first transistor M1, and a light-shielding material is disposed on a side of an active layer of the photo-sensing transistor close to the display panel.
In this embodiment, the light shielding material is disposed to shield light emitted from the display panel 101 and directly incident on the active layer of the phototransistor, so as to avoid a detection error caused by the interference of the active layer of the phototransistor with the light emitted from the display panel 101. The light shielding material may be provided in the photosensor 103, or may be provided in a portion of the adhesive layer 106 located in the folding region FF shown in fig. 7.
Of course, it should be noted that, along the thickness direction of the display module, the projection of the photo-sensing transistor in the photo-sensor and the projection of the pixel point in the display panel are arranged in a staggered manner and do not overlap.
Optionally, fig. 8 is a schematic structural diagram of another display module according to an embodiment of the present invention, referring to fig. 8, a diffuse reflection material layer 107 is disposed on a surface of the flexible cover 102 away from the display panel 101, and similarly, the diffuse reflection material layer 107 may also be disposed on a surface of the flexible cover 102 close to the display panel 101.
Specifically, as mentioned above, when the reflection modes of different areas of the flexible cover plate to the ambient light are different, the wrinkle phenomenon of the display module observed by the user is obvious. The diffuse reflection material layer 107 can diffuse the external environment light, so that the external environment light is diffused on the diffuse reflection material layer, the ambient light reflected by the display module and viewed by the user is diffused, and the wrinkle phenomenon viewed by the user can be greatly weakened.
Exemplarily, as shown in fig. 8, in the present embodiment, the diffuse reflection material layer 107 may be disposed only on a portion of the flexible cover sheet 102 corresponding to the non-folding area of the display panel 101. Because the part that flexible apron 102 corresponds folding region can become the unevenness after long-time the use, can become the diffuse reflection to ambient light's reflection mode, consequently, only set up the diffuse reflection material layer in the part that flexible apron 102 corresponds non-folding region, can guarantee that the ambient light that the display module assembly reflection that the user watched all is the light after the diffuse reflection.
Of course, as shown in fig. 9, fig. 9 is a schematic structural view of another display module according to an embodiment of the present invention, in this embodiment, the entire surface of the diffuse reflection material layer 107 covers the flexible cover plate 102. By the arrangement, ambient light reflected by the display module and viewed by a user can be guaranteed to be light after diffuse reflection, the preparation process of the diffuse reflection material layer can be simplified, a precise mask is not required to be additionally used, and the ordinary mask which is the same as the flattening layer and other film layers in the display panel can be used.
An embodiment of the present invention further provides a display driving method for a display module, which is used to drive the display module provided in any embodiment of the present invention, and referring to fig. 10, fig. 10 is a flowchart of the display driving method for the display module provided in the embodiment of the present invention, where the display driving method includes:
step S301, detecting optical data of ambient light by a light sensor;
in step S302, the control module adjusts the brightness of the folding area and/or the non-folding area of the display panel according to the optical data of the ambient light.
Specifically, in the fold area, the control module weakens the apparent fold depth by resolving the optical data of the ambient light and giving diffuse reflection compensation at different locations.
Specifically, the optical sensor feeds back the optical data of the ambient light to the control module through detection, and the control module adjusts the luminance of the display panel, so that the light emitted by the display panel and entering the human eyes through the flexible cover plate in different areas of the display module is the same as the ambient light reflected to enter the human eyes after being superposed, and the obvious wrinkle phenomenon cannot be observed by a user, so that the display effect is greatly improved.
The display driving method of the display module provided by the embodiment can enable light emitted by the display panel and entering human eyes through the flexible cover plate in different areas of the display module to be the same as ambient light reflected to enter the human eyes after being superposed by adjusting the brightness of the display panel, so that a user cannot watch an obvious wrinkle phenomenon, and the display effect is greatly improved.
Fig. 11 is a schematic view of a display device according to an embodiment of the present invention, where fig. 11 is a schematic structural diagram of the display device according to the embodiment of the present invention; the display device comprises the display module provided by any embodiment of the invention. The display device can be a mobile phone, a tablet computer, an MP3, an MP4, an intelligent watch, an intelligent helmet or a vehicle-mounted display, and the like, and has the same beneficial effects because the display device comprises the display module provided by any embodiment of the invention, and the description is omitted here.
It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present invention may be executed in parallel, sequentially, or in different orders, and are not limited herein as long as the desired results of the technical solution of the present invention can be achieved.
The above-described embodiments should not be construed as limiting the scope of the invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A display module, comprising: the display panel is provided with a folding area and a non-folding area; flexible apron set up in display panel's light-emitting side, its characterized in that, display module assembly still includes:
a light sensor disposed between the flexible cover sheet and the display panel or integrated in the display panel, the light sensor configured to detect optical data of ambient light;
a control module configured to adjust brightness of the display panel in a folded area and/or an unfolded area according to the optical data of the ambient light.
2. The display module according to claim 1, wherein the light sensor is disposed in the folding area;
the control module attenuates visual fold depth by parsing the optical data of the ambient light and providing diffuse reflectance compensation at different locations of the fold region.
3. The display module according to claim 1, wherein the display module further comprises an adhesive layer; the light sensor is embedded in the adhesive layer and used for limiting the relative position of the light sensor and the display panel.
4. The display module of claim 3,
the adhesive layer includes a first sub-adhesive layer and a second sub-adhesive layer, and the light sensor is disposed between the first sub-adhesive layer and the second sub-adhesive layer in a direction parallel to the display panel;
or, a groove is formed in one surface, close to the flexible cover plate, of the bonding layer, and the optical sensor is arranged in the groove.
5. The display module according to claim 1, wherein a diffuse reflection material layer is disposed on a surface of the flexible cover plate away from or close to the display panel.
6. The display module according to claim 5, wherein the diffuse reflection material layer is only disposed on a portion of the flexible cover corresponding to the non-folding area of the display panel;
or the whole surface of the diffuse reflection material layer covers the flexible cover plate.
7. The display module of claim 1, wherein the light sensor comprises a plurality of photo transistors, and a light shielding material is disposed on a side of the active layer of the photo transistors, the side being close to the display panel.
8. The display module according to claim 1, further comprising a support layer disposed on a side of the display panel away from the flexible cover plate;
the support layer includes a support structure corresponding to a non-folding region of the display panel, and a folding structure corresponding to a folding region of the display panel.
9. A display driving method of a display module, for driving the display module according to any one of claims 1 to 8, wherein the display driving method comprises:
the light sensor detects optical data of ambient light;
and the control module adjusts the brightness of the folding area and/or the non-folding area of the display panel according to the optical data of the ambient light.
10. A display device, characterized in that the display device comprises the display module according to any one of claims 1-8.
CN202211215357.2A 2022-09-30 2022-09-30 Display module, display driving method thereof and display device Pending CN115588366A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211215357.2A CN115588366A (en) 2022-09-30 2022-09-30 Display module, display driving method thereof and display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211215357.2A CN115588366A (en) 2022-09-30 2022-09-30 Display module, display driving method thereof and display device

Publications (1)

Publication Number Publication Date
CN115588366A true CN115588366A (en) 2023-01-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211215357.2A Pending CN115588366A (en) 2022-09-30 2022-09-30 Display module, display driving method thereof and display device

Country Status (1)

Country Link
CN (1) CN115588366A (en)

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