CN111009567A - Display device, display module and preparation method thereof - Google Patents
Display device, display module and preparation method thereof Download PDFInfo
- Publication number
- CN111009567A CN111009567A CN201911343071.0A CN201911343071A CN111009567A CN 111009567 A CN111009567 A CN 111009567A CN 201911343071 A CN201911343071 A CN 201911343071A CN 111009567 A CN111009567 A CN 111009567A
- Authority
- CN
- China
- Prior art keywords
- pixel
- sub
- display screen
- pixel unit
- display
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Images
Classifications
-
- 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
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
-
- 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
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/128—Active-matrix OLED [AMOLED] displays comprising two independent displays, e.g. for emitting information from two major sides of the display
-
- 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
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
- H10K59/352—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels the areas of the RGB subpixels being different
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention provides a display device, a display module and a preparation method thereof. The display module comprises a first display screen and a second display screen. The second display screen is connected with the first display screen and can be bent to the back of the first display screen relative to the first display screen, wherein the first display screen comprises a plurality of first pixel units, the second display screen comprises a plurality of second pixel units, the first pixel units and the second pixel units comprise sub-pixels with at least three colors, and the area of each sub-pixel of the first pixel unit is respectively larger than that of each corresponding sub-pixel of the second pixel unit. The scheme of the embodiment of the invention can enable the display screens under different service durations to have approximately the same brightness.
Description
Technical Field
The invention relates to the field of display, in particular to a display device, a display module and a preparation method of the display module.
Background
At present, the Organic Light-Emitting Diode (OLED) display technology not only can make the display module Light and thin, but also can make the display module bendable. The display module with the bendable performance is more convenient to carry. The foldable display module can be used in various display devices, such as a Portable phone, a tablet computer, a Portable Multimedia Player (PMP), an electronic book, and an electronic newspaper.
When the foldable display module is used, a part of the display module is bent outwards. At this time, the portion of the display module bent outward does not need to be lit. After long-term use, the device attenuation in the front display screen of the display module is obviously faster than the device attenuation in the outward bending part display screen, the brightness of the two parts of display screens is seriously inconsistent, and chromatic aberration exists, so that the problem of uneven display when the display module is flattened for use is caused.
Disclosure of Invention
In view of this, embodiments of the present invention provide a display device, a display module and a method for manufacturing the display module. The problem of show the inequality when the exhibition of above display module assembly is flat is used is solved.
In a first aspect, an embodiment of the present invention provides a display module, including: a first display screen and a second display screen; the second display screen is connected with the first display screen and can be bent to the back of the first display screen relative to the first display screen, wherein the first display screen comprises a plurality of first pixel units, the second display screen comprises a plurality of second pixel units, the first pixel units and the second pixel units comprise sub-pixels with at least three colors, and the area of each sub-pixel of the first pixel unit is respectively larger than that of each corresponding sub-pixel of the second pixel unit.
In some embodiments of the present invention, the display module further includes: the first driving chip is used for sending a current control instruction to each sub-pixel of the first pixel unit so as to light each sub-pixel; and the second driving chip is used for sending a current control instruction to each sub-pixel of the second pixel unit so as to light each sub-pixel, wherein the current value sent by the first driving chip to each sub-pixel of the first pixel unit is respectively smaller than the current value sent by the second driving chip to each corresponding sub-pixel of the second pixel unit.
In some embodiments of the present invention, the luminance per unit area of each sub-pixel of the first pixel unit and each corresponding sub-pixel of the second pixel unit is positively correlated to the loaded current value, and the lifetime of each sub-pixel of the first pixel unit and each corresponding sub-pixel of the second pixel unit is negatively correlated to the loaded current value.
In some embodiments of the present invention, an area ratio of each sub-pixel of the first pixel unit to each corresponding sub-pixel of the second pixel unit is equal to a luminance ratio per unit area of each sub-pixel of the second pixel unit to each corresponding sub-pixel of the first pixel unit.
In some embodiments of the present invention, when the second display screen and the first display screen are in the same plane, the first driving chip and the second driving chip drive each sub-pixel of the first pixel unit and each corresponding sub-pixel of the second pixel unit to be simultaneously lighted; when the second display screen is bent to the back of the first display screen relative to the first display screen, the first driving chip drives each sub-pixel of each first pixel unit to be lightened, and the second driving chip does not work.
In some embodiments of the present invention, each sub-pixel of the first pixel unit and each corresponding sub-pixel of the second pixel unit include sub-pixels of three colors of red, blue and green.
In some embodiments of the present invention, the first display screen and the second display screen are the same screen body.
In a second aspect, an embodiment of the invention provides a display device, including the display module described above.
In a third aspect, an embodiment of the present invention provides a method for manufacturing a display module, including: providing a first flexible substrate and a second flexible substrate; forming a first display screen by disposing a plurality of first pixel units on a first flexible substrate; the second flexible substrate is provided with a plurality of second pixel units to form a second display screen which is connected with the first display screen and can be bent to the back of the first display screen relative to the first display screen, wherein the first pixel units and the second pixel units comprise sub-pixels with at least three colors, and the area of each sub-pixel of the first pixel unit is respectively larger than that of each corresponding sub-pixel of the second pixel unit.
In some embodiments of the present invention, the method further comprises: driving each sub-pixel of the first pixel unit to light according to the current control instruction; and driving each sub-pixel of the second pixel unit to light according to the current control instruction, wherein the current value of each sub-pixel passing through the first pixel unit is respectively smaller than the current value of each corresponding sub-pixel passing through the second pixel unit.
The embodiment of the invention provides a display device, a display module and a preparation method of the display module. This display module assembly sets up the area of each sub-pixel in the second display screen to be less than the mode of each corresponding sub-pixel's in the first display screen area, when letting in the corresponding electric current of first display screen and second display screen, can make first display screen and second display screen have roughly the same luminance under different length of time of using, and then have roughly the same luminance when making first display screen and second display screen expand to use, make the display module assembly show the homogeneity, improve user experience.
Drawings
Fig. 1A is a schematic structural diagram of a display module in an unfolded state according to an embodiment of the present invention.
Fig. 1B is a schematic front view illustrating the display module in fig. 1A in a bent state according to an embodiment of the invention.
Fig. 1C is a schematic front view illustrating a display module in fig. 1A in a bent state according to another embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a first red sub-pixel according to an embodiment of the present invention.
Fig. 3 is a schematic diagram illustrating a relationship between device lifetimes of a first red subpixel and a second red subpixel and a current value applied thereto according to an embodiment of the present invention.
Fig. 4 is a schematic diagram illustrating a relationship between the luminance per unit area of the first red sub-pixel and the luminance per unit area of the second red sub-pixel and the loaded current value of the first red sub-pixel and the second red sub-pixel according to an embodiment of the present invention.
Fig. 5 is a schematic flow chart illustrating a manufacturing method of a display module according to an embodiment of the invention.
Detailed Description
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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1A is a schematic structural diagram of a display module 100 in an unfolded state according to an embodiment of the invention.
Fig. 1B is a schematic front view illustrating the display module 100 in fig. 1A in a bent state according to an embodiment of the invention.
Fig. 1C is a schematic front view of the display module 100 in fig. 1A in a bent state according to another embodiment of the invention.
As shown in fig. 1A, the display module 100 includes a first display screen 110 and a second display screen 120. The second display screen 120 is connected to the first display screen 110 and can be bent to the back of the first display screen relative to the first display screen 110, wherein the first display screen 110 includes a plurality of first pixel units 111; the second display panel 120 includes a plurality of second pixel units 121, the first pixel units 111 and the second pixel units 121 include sub-pixels of at least three colors, and the area of each sub-pixel of the first pixel unit 111 is larger than the area of each corresponding sub-pixel of the second pixel unit 121.
In actual use, when the second display screen 120 is bent to the back of the first display screen 110, the second display screen 120 does not need to be lighted. After long-term use, the attenuation of the devices in the first display screen 110 is significantly faster than that of the devices in the second display screen 120, which may seriously result in the brightness inconsistency between the two display screens. Particularly, when the first display screen 110 and the second display screen 120 are unfolded for use, a problem of display unevenness is conspicuous.
According to the embodiment of the invention, the area of each sub-pixel in the second display screen is smaller than the area of each corresponding sub-pixel in the first display screen. Corresponding current is led into for first display screen and second display screen can make first display screen and second display screen have roughly the same luminance under different length of time of using, and then has roughly the same luminance when making first display screen and second display screen expand to use for it shows the homogeneity, improves user experience.
Specifically, the first display screen 110 and the second display screen 120 may be connected by a rotating shaft or a bayonet, or may be two display areas (e.g., flexible display screens) of the same screen body, which is not limited in this embodiment of the present invention. The second display screen 120 may be folded at 110180 ° relative to the first display screen, as shown in fig. 1B, and the first display screen 110 may be folded outward to the back of the second display screen 120. As shown in fig. 1C, the second display screen 120 may also be rolled on the back of the second display screen 120 relative to the first display screen 110. It is understood that the relative position and the relative size relationship between the first display screen 110 and the second display screen 120 are not limited in the embodiment of the present invention. It should be noted that the display module may further include other display screens, which is not limited in this embodiment of the present invention.
According to the embodiment of the present invention, each sub-pixel of the first pixel unit 111 and each corresponding sub-pixel of the second pixel unit 121 include sub-pixels of three colors of red, blue, and green. For example, the first pixel unit 111 may include a first red subpixel 1111, a first blue subpixel 1112, and a first green subpixel 1113. The second pixel unit 121 may include a second red subpixel 1211, a second blue subpixel 1212, and a second green subpixel 1213. The area ratio of the first red subpixel 1112 to the second red subpixel 1211, the area ratio of the first blue subpixel 1112 to the second blue subpixel 1212, and the area ratio of the first green subpixel 1113 to the second green subpixel 1213 may all be constant values, and these ratios may be calculated according to the attenuation of each subpixel and the area of each subpixel in a pixel unit, which may be the same or different, and the specific calculation manner is as follows. In addition, the sub-pixels in the pixel unit may further include a white sub-pixel, the arrangement of the sub-pixels may be a standard RGB arrangement, a new RGB arrangement, or an RGB Pentile arrangement, and the shape of each sub-pixel may be a rectangle, a diamond, or an ellipse, which is not limited in this embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a first red sub-pixel 1111 according to an embodiment of the present invention.
As shown in fig. 2, the first red subpixel 1111 may include: an anode 11111, a hole injection layer 11112 on the anode 11111, a hole transport layer 11113 on the hole injection layer 11112, a red light emitting layer 11114 on the hole transport layer 11113, an electron transport layer 11115 on the red light emitting layer 11114, an electron injection layer 11116 on the electron transport layer 11115, and a cathode 11117 on the electron injection layer 11116. The red sub-pixel 1111 may be driven by the thin film transistor 11112. Preferably, the material of the red light emitting layer 11115 may include a red fluorescent dye, for example, a DCM series compound. The material of the blue light emitting layer in the blue subpixel 1112 may include N-arylbenzimidazoles and derivatives thereof. The material of the green light emitting layer in the green subpixel 1113 may include a green dye such as Coumarin-6, quinacridone or coronene and citalopram. It is understood that each sub-pixel is similar to the corresponding sub-pixel in structure and material, and will not be described herein again.
According to an embodiment of the present invention, the display module further includes: the driving circuit comprises a first driving chip and a second driving chip. The first driving chip may be configured to send a current control instruction to each sub-pixel of the first pixel unit 111 to light each sub-pixel. The second driving chip may be configured to send a current control instruction to each sub-pixel of the second pixel unit 121 to light up each sub-pixel, wherein a current value sent by the first driving chip to each sub-pixel of the first pixel unit 111 is smaller than a current value sent by the second driving chip to each corresponding sub-pixel of the second pixel unit 121.
Specifically, the first driving chip may drive the first red sub-pixel 1111 to light up through the thin film transistor 11112. Correspondingly, the first driving chip can also drive each sub-pixel through the thin film transistor corresponding to each other sub-pixel. The using steps of the first driving chip are similar to those of the first driving chip, and are not described herein again. Of course, each sub-pixel may be lighted by one driving chip or by a plurality of driving chips, for example, the first driving chip and the second driving chip may be the same driving chip, and each sub-pixel may also correspond to one driving chip, which is not limited in this embodiment of the present invention.
Since the second display panel 120 is used for a relatively short time, the first display panel 110 and the second display panel 120 can have substantially the same brightness by increasing the current in each sub-pixel of the second display panel 120 to increase the decay rate of the corresponding organic light emitting layer on the basis of reducing the area. For example, the luminance of the first display panel 110 becomes 90% of the initial luminance after 100 hours of use, and the luminance of each sub-pixel of the second display panel 120 becomes 90% of the initial luminance after 70 hours of use under the action of a larger current, so that the sub-pixels in the first display panel 110 and the second display panel 120 are simultaneously attenuated.
According to the embodiment of the invention, the lifetimes of the sub-pixels of the first pixel unit 110 and the corresponding sub-pixels of the second pixel unit 120 are inversely related to the value of the applied current.
Fig. 3 is a schematic diagram illustrating a relationship between device lifetimes of the first red subpixel 1111 and the second red subpixel 1211 and a current value applied thereto according to an embodiment of the present invention.
The actual relation curve of the service life of each sub-pixel and the loaded current value can be tested and simulated according to the material, the production process and the like of each sub-pixel. For example, a scatter plot may be utilized for statistical simulation. The service lives of the first display screen 110 and the second display screen 120 can be counted by using the big data, and then the service lives of the sub-pixels can be calculated by converting the sub-pixels as units. As shown in FIG. 3, the lifetimes of the first red subpixel 1111 and the second red subpixel 1211 are T1And T2. In order to keep the first red subpixel 1111 and the second red subpixel 1211 attenuating at the same time, the relationship between the lifetime of the first red subpixel 1111 and the second red subpixel 1211 and the value of the current applied to the first red subpixel 1111 and the second red subpixel 1211 can be obtained by plotting the relationship between the lifetime of the first red subpixel 1111 and the lifetime of the second red subpixel 1211 and the value of the current applied to the first red subpixel 1111 and the second red subpixel 1211I1And I2It is clear that1＜I2. The corresponding relationship between the lifetimes of the other sub-pixels and the first red sub-pixel 1111 and the second red sub-pixel 1211 and the current values loaded thereto is similar, and will not be further described herein.
According to the embodiment of the present invention, the area ratio of each sub-pixel of the first pixel unit 110 to each corresponding sub-pixel of the second pixel unit 120 is respectively equal to the luminance ratio of each sub-pixel of the second pixel unit 120 to each corresponding sub-pixel of the first pixel unit 110.
According to the embodiment of the invention, the luminance per unit area of each sub-pixel of the first pixel unit and each corresponding sub-pixel of the second pixel unit is positively correlated with the loaded current value.
Fig. 4 is a schematic diagram illustrating a relationship between the luminance per unit area of the first red subpixel 1111 and the second red subpixel 1211 and the current value applied thereto according to an embodiment of the present invention.
The actual relationship curve of the luminance per unit area of each sub-pixel to the current value applied thereto may be statistically simulated using a scatter diagram. As shown in fig. 4, the current I is applied according to the relationship between the luminance per unit area of the first red subpixel 1111 and the second red subpixel 1211 and the current value applied thereto1And I2The first red subpixel 1111 and the second red subpixel 1211 have a luminance per unit area of L1And L2It is clear that L1＜L2. The correspondence between the luminance per unit area of the other sub-pixels and the first red sub-pixel 1111 and the second red sub-pixel 1211 and the current applied to the other sub-pixels is similar, and the description thereof is omitted.
As shown in fig. 3 and 4, the luminance per unit area of each sub-pixel can be estimated from the lifetime of each sub-pixel. In the embodiment of the present invention, the area ratio of each sub-pixel of the first pixel unit 111 to each corresponding sub-pixel of the second pixel unit 121 is respectively equal to the luminance ratio of each sub-pixel of the second pixel unit to each corresponding sub-pixel of the first pixel unit. Therefore, the area ratio can be calculated according to the brightness ratio, and the accurate area of each sub-pixel in the second display screen 120 can be calculated, so that the display brightness uniformity of the first display screen 110 and the second display screen 120 is ensured.
In addition, before the display module is used, the brightness of the first display screen 110 and the second display screen 120 may be measured by using a Charge-coupled Device (CCD) camera at different use times, and the brightness may be directly fine-tuned by using a driving chip, where the driving chip may be a first driving chip, a second driving chip, or another driving chip, and the number of the driving chips may be 1, 2, or more, which is not limited in the embodiment of the present invention. For example, dark areas may increase current and light areas decrease current. This can achieve better uniformity of overall brightness.
According to the embodiment of the invention, when the second display screen 120 is in the same plane as the first display screen 110, the first driving chip and the second driving chip drive each sub-pixel of the first pixel unit 111 and each corresponding sub-pixel of the second pixel unit 121 to be simultaneously lighted; when the second display screen 120 is bent to the back of the first display screen 110 relative to the first display screen 110, the first driving chip drives each sub-pixel of each first pixel unit 111 to be turned on, and the second driving chip does not work.
As shown in fig. 1A to 1C, the display module 100 can be in various states when in use. For convenience of carrying and use, the display module 100 may be in a state where the second display screen 120 is bent outward by 180 ° with respect to the first display screen 110 or in a state where the second display screen 120 is curled at the back of the first display screen 110. At this time, the second display screen 120 on the rear surface is not used, and the second driving chip may not be operated. This reduces the time of use of the second display screen 120, slows down the decay rate of each sub-pixel, and causes a problem of non-uniformity of the display brightness of the first display screen 110. The embodiment of the invention reduces the area of each sub-pixel in the second display screen 120, and even if the second display screen 120 is not used on the back of the first display screen 110, the sub-pixels in the first display screen 110 and the second display screen 120 can maintain the same brightness when the display module 100 is in the unfolded state and are simultaneously lighted.
According to an embodiment of the present invention, the first display screen 110 and the second display screen 120 may be the same screen body. When the first display screen 110 and the second display screen 120 are the same screen body, the requirement for uniformity of brightness is higher, and if the phenomenon of non-uniform display brightness occurs, the requirement is more obvious. Embodiments of the present invention may provide a good solution to this problem.
The embodiment of the invention also provides a display device, which comprises the display module 100. The display device can be a mobile phone, a tablet computer, an electronic book or an electronic newspaper. For convenience of use and carrying, the display device may be in a state similar to fig. 1B and 1C. In this state, the display device portion on the front side is used for display, and the display device portion on the back side is in a screen-turning state. Based on the embodiment of the invention, when the display device is used, the display brightness is uniform, and the user experience is excellent.
Optionally, the display device may further include an earphone jack, a headphone, a front camera, a sound control key, an external interface, a power-on key, a rear camera, a flash lamp, a speaker, and the like. The earphone and the front camera are positioned on the front side of the display device, the loudspeaker, the rear camera and the flash lamp are positioned on the back side of the display device, the sound control key and the starting key are positioned on the right side of the shell, and the external interface and the earphone jack are positioned on the lower end face of the display device.
Optionally, the display device may further include a display module for displaying the display content, wherein the format of the display content may include, but is not limited to, azw, txt, pdf, mobi, prc, doc, jpg, and the like.
Fig. 5 is a schematic flow chart illustrating a manufacturing method of the display module 100 according to an embodiment of the invention. As shown in fig. 5, the method includes the following steps.
510: providing a first flexible substrate and a second flexible substrate;
520: forming a first display screen by disposing a plurality of first pixel units on a first flexible substrate;
530: the second flexible substrate is provided with a plurality of second pixel units to form a second display screen which is connected with the first display screen and can be bent to the back of the first display screen relative to the first display screen, wherein the first pixel units and the second pixel units comprise sub-pixels with at least three colors, and the area of each sub-pixel of the first pixel unit is respectively larger than that of each corresponding sub-pixel of the second pixel unit.
Specifically, the first flexible substrate and the second flexible substrate may be the same flexible substrate. A plurality of first pixel units can be arranged on a certain area of the flexible substrate to form a first display screen, and a plurality of second pixel units can be arranged on other areas of the flexible substrate to form a second display screen. At this time, the second display screen and the first display screen may be two display areas of the same screen body. The first flexible substrate and the second flexible substrate may also be different flexible substrates, and a first display screen and a second display screen may be formed on the first flexible substrate and the second flexible substrate, respectively.
Based on the embodiment of the invention, the second display screen with the area of each sub-pixel smaller than that of each corresponding sub-pixel in the first display screen is formed, so that the first display screen and the second display screen have approximately the same brightness under different use durations when the corresponding currents of the first display screen and the second display screen are introduced, the first display screen and the second display screen have approximately the same brightness when being unfolded for use, the display module is enabled to display uniformly, and the user experience is improved.
According to an embodiment of the present invention, the above steps further comprise: driving each sub-pixel of the first pixel unit to light according to the current control instruction; and driving each sub-pixel of the second pixel unit to light according to the current control instruction, wherein the current value of each sub-pixel passing through the first pixel unit is respectively smaller than the current value of each corresponding sub-pixel passing through the second pixel unit.
It is understood that specific structures and functions of the first display screen and the second display screen may refer to the specific description in the above embodiments of fig. 1A to 4, and are not described herein again to avoid repetition.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A display module, comprising: a first display screen and a second display screen; the second display screen is connected with the first display screen and can be bent to the back of the first display screen relative to the first display screen, wherein the first display screen comprises a plurality of first pixel units, the second display screen comprises a plurality of second pixel units, the first pixel units and the second pixel units comprise sub-pixels of at least three colors, and the area of each sub-pixel of the first pixel unit is respectively larger than that of each corresponding sub-pixel of the second pixel unit.
2. The display module of claim 1, further comprising: the first driving chip is used for sending a current control instruction to each sub-pixel of the first pixel unit so as to light each sub-pixel; and the second driving chip is used for sending a current control instruction to each sub-pixel of the second pixel unit so as to light each sub-pixel, wherein the current value sent by the first driving chip to each sub-pixel of the first pixel unit is respectively smaller than the current value sent by the second driving chip to each corresponding sub-pixel of the second pixel unit.
3. The display module of claim 2, wherein the luminance per unit area of each sub-pixel of the first pixel unit and each corresponding sub-pixel of the second pixel unit is positively correlated to the applied current value, and the lifetime of each sub-pixel of the first pixel unit and each corresponding sub-pixel of the second pixel unit is negatively correlated to the applied current value.
4. The display module of claim 3, wherein the area ratio of each sub-pixel of the first pixel unit to each corresponding sub-pixel of the second pixel unit is equal to the luminance ratio per unit area of each sub-pixel of the second pixel unit to each corresponding sub-pixel of the first pixel unit.
5. The display module according to any one of claims 2 to 4, wherein when the second display screen and the first display screen are in the same plane, the first driving chip and the second driving chip drive each sub-pixel of the first pixel unit and each corresponding sub-pixel of the second pixel unit to be simultaneously lit; when the second display screen is bent to the back of the first display screen relative to the first display screen, the first driving chip drives each sub-pixel of the first pixel unit to be lightened, and the second driving chip does not work.
6. The display module according to any one of claims 1 to 4, wherein each sub-pixel of the first pixel unit and each corresponding sub-pixel of the second pixel unit comprises sub-pixels of three colors of red, blue and green.
7. The display module according to claim 5, wherein the first display screen and the second display screen are the same screen body.
8. A display device comprising the display module of any one of claims 1 to 7.
9. A preparation method of a display module is characterized by comprising the following steps:
providing a first flexible substrate and a second flexible substrate;
forming a first display screen by disposing a plurality of first pixel units on the first flexible substrate;
the second flexible substrate is provided with a plurality of second pixel units to form a second display screen which is connected with the first display screen and can be bent to the back of the first display screen relative to the first display screen, wherein the first pixel units and the second pixel units comprise sub-pixels of at least three colors, and the area of each sub-pixel of the first pixel unit is respectively larger than that of each corresponding sub-pixel of the second pixel unit.
10. The method for manufacturing a display module according to claim 9, further comprising:
driving each sub-pixel of the first pixel unit to be lightened according to a current control instruction;
and driving each sub-pixel of the second pixel unit to light according to the current control instruction, wherein the current value of each sub-pixel passing through the first pixel unit is respectively smaller than the current value of each corresponding sub-pixel passing through the second pixel unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911343071.0A CN111009567B (en) | 2019-12-23 | 2019-12-23 | Display device, display module and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911343071.0A CN111009567B (en) | 2019-12-23 | 2019-12-23 | Display device, display module and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111009567A true CN111009567A (en) | 2020-04-14 |
| CN111009567B CN111009567B (en) | 2022-06-03 |
Family
ID=70115995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911343071.0A Active CN111009567B (en) | 2019-12-23 | 2019-12-23 | Display device, display module and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111009567B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021253977A1 (en) * | 2020-06-15 | 2021-12-23 | 合肥维信诺科技有限公司 | Foldable display panel and foldable display device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150029683A1 (en) * | 2013-07-24 | 2015-01-29 | Samsung Display Co., Ltd. | Foldable display apparatus and method of manufacturing the same |
| KR20150079324A (en) * | 2013-12-31 | 2015-07-08 | 엘지디스플레이 주식회사 | Double-sided emitting transparent display apparatus and controlling method thereof |
| CN107437400A (en) * | 2017-09-04 | 2017-12-05 | 上海天马有机发光显示技术有限公司 | Display panel and display device |
| CN108735790A (en) * | 2018-05-30 | 2018-11-02 | 武汉天马微电子有限公司 | Display panel, display device and image element driving method |
| CN109830184A (en) * | 2019-02-22 | 2019-05-31 | 京东方科技集团股份有限公司 | A kind of electroluminescence display panel and preparation method thereof, display device |
| CN109904204A (en) * | 2019-03-15 | 2019-06-18 | 武汉天马微电子有限公司 | Flexible display panels and display device |
| CN110047897A (en) * | 2019-04-26 | 2019-07-23 | 武汉天马微电子有限公司 | A kind of display panel and display device |
| CN110164398A (en) * | 2019-05-24 | 2019-08-23 | 京东方科技集团股份有限公司 | A kind of display lightness regulating method and system |
| US10747263B2 (en) * | 2018-03-06 | 2020-08-18 | Dell Products, Lp | System for color and brightness output management in a dual display device |
-
2019
- 2019-12-23 CN CN201911343071.0A patent/CN111009567B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150029683A1 (en) * | 2013-07-24 | 2015-01-29 | Samsung Display Co., Ltd. | Foldable display apparatus and method of manufacturing the same |
| KR20150079324A (en) * | 2013-12-31 | 2015-07-08 | 엘지디스플레이 주식회사 | Double-sided emitting transparent display apparatus and controlling method thereof |
| CN107437400A (en) * | 2017-09-04 | 2017-12-05 | 上海天马有机发光显示技术有限公司 | Display panel and display device |
| US10747263B2 (en) * | 2018-03-06 | 2020-08-18 | Dell Products, Lp | System for color and brightness output management in a dual display device |
| CN108735790A (en) * | 2018-05-30 | 2018-11-02 | 武汉天马微电子有限公司 | Display panel, display device and image element driving method |
| CN109830184A (en) * | 2019-02-22 | 2019-05-31 | 京东方科技集团股份有限公司 | A kind of electroluminescence display panel and preparation method thereof, display device |
| CN109904204A (en) * | 2019-03-15 | 2019-06-18 | 武汉天马微电子有限公司 | Flexible display panels and display device |
| CN110047897A (en) * | 2019-04-26 | 2019-07-23 | 武汉天马微电子有限公司 | A kind of display panel and display device |
| CN110164398A (en) * | 2019-05-24 | 2019-08-23 | 京东方科技集团股份有限公司 | A kind of display lightness regulating method and system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021253977A1 (en) * | 2020-06-15 | 2021-12-23 | 合肥维信诺科技有限公司 | Foldable display panel and foldable display device |
| US12014657B2 (en) | 2020-06-15 | 2024-06-18 | Hefei Visionox Technology Co., Ltd. | Foldable display panel and foldable display apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111009567B (en) | 2022-06-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1921670B (en) | Apparatus and method for displaying a mobile terminal standby screen | |
| CN111799318B (en) | Display panel and display device | |
| US20190236997A1 (en) | Display driving method and organic light-emitting display device thereof | |
| US8264452B2 (en) | Display device, display method, and electronic device | |
| JP2021524048A (en) | Display panel and display device | |
| CN103219359A (en) | Organic electroluminescent array substrate and manufacturing method thereof, display device | |
| US20160012761A1 (en) | Organic electroluminescent display device, driving method thereof and display device | |
| JP7473102B2 (en) | Display brightness adjustment method and related device | |
| WO2022083278A1 (en) | Display module and preparation method and control method therefor, and electronic device | |
| CN1244895C (en) | Method for aging display device and electronic apparatus using same | |
| US20140313244A1 (en) | Method of displaying image of display panel | |
| CN107945735B (en) | Pixel calling method and device and related medium product | |
| US8913094B2 (en) | Display and method of displaying an image with a pixel | |
| TW571281B (en) | Driving circuit and method for a display device and display device therewith | |
| CN115223501B (en) | Drive compensation circuit, compensation method and display device | |
| CN113516915A (en) | Display module, control method thereof and electronic equipment | |
| CN111009567B (en) | Display device, display module and preparation method thereof | |
| US6778151B2 (en) | Driving circuit of display capable of preventing charge accumulation | |
| WO2023061114A1 (en) | Display panel and electronic device | |
| US20030030371A1 (en) | Organic light emitting backlight device for liquid crystal display | |
| CN100559439C (en) | Display device and driving method thereof | |
| CN107851418A (en) | A kind of spontaneous optical arrays display control method and device, equipment | |
| CN111261666A (en) | Display panel and display device | |
| KR100589785B1 (en) | Pixel structure of organic electro luminescence display apparatus | |
| CN111429844B (en) | Display panel and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |