CN114067687B - Display panel, display panel manufacturing method and display terminal - Google Patents
Display panel, display panel manufacturing method and display terminal Download PDFInfo
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- CN114067687B CN114067687B CN202111362336.9A CN202111362336A CN114067687B CN 114067687 B CN114067687 B CN 114067687B CN 202111362336 A CN202111362336 A CN 202111362336A CN 114067687 B CN114067687 B CN 114067687B
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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
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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
- G09F9/33—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
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
Abstract
The invention relates to a display panel, a display panel manufacturing method and a display terminal, wherein the display panel is provided with a bendable region, and the display panel comprises; a display substrate; when the display panel is in a flattened state, at least part of the area of the display substrate, which is positioned in the bendable region, is in a wrinkled state and comprises at least one of a light divergence section and a light collection section; the light adjusting layer is formed on the light emitting side of the display substrate and comprises a first light adjusting part positioned in the bendable region; the first light adjusting part comprises a first light adjusting section which is positioned on the light emitting side of the light diverging section and gathers the light rays emitted by the light diverging section; and/or the first light adjustment part comprises a second light adjustment section which is positioned at the light emitting side of the light collection section and diverges the light rays emitted by the light collection section. Therefore, the light emitted from the light adjusting layer is finally adjusted to be emitted normally through the first light adjusting section and the second light adjusting section, and folds which can be felt by a user when the display panel is flattened and used are weakened.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel, a display panel manufacturing method and a display terminal.
Background
With the development of terminal technology, wearable devices, such as smart terminals of smart bracelets, watches and the like, are more and more types; in order to meet the requirements of users on a large screen and portability, a terminal with a foldable screen is designed, and after the foldable screen is opened and closed for a plurality of times, the opening and closing parts have obvious fold phenomenon.
The foldable screen is generally made of a flexible display screen, after the flexible display screen (OLED) is bent, a neutral layer of the bent portion is not stressed (wherein, a material outside the neutral layer is subjected to tensile stress, and a material inside the neutral layer is subjected to compressive stress), so that after the flexible display screen is flattened from a bent state, the material inside the screen subjected to tensile and compressive stress is not completely restored to deform, and a surface wrinkling phenomenon occurs.
In the use, the flexible display screen influences the display effect along with the fluctuation of the folds, so that people can visually feel the brightness change of the bending part and perceive the folds.
Disclosure of Invention
Accordingly, it is necessary to provide a display panel, a display panel manufacturing method, and a display terminal, which solve the problem that a user can perceive a crease due to a creasing phenomenon of a bending portion when the folding screen is flattened for use.
A display panel, the display panel comprising a bendable region, the display panel comprising:
when the display panel is in a flattened state, at least part of the display substrate positioned in the bendable region is in a wrinkled state and comprises at least one of a light divergence section and a light collection section; a kind of electronic device with high-pressure air-conditioning system
The light adjusting layer is positioned on the light emitting side of the display substrate and comprises a first light adjusting part positioned in the bendable region;
wherein the first light adjustment portion comprises a first light adjustment section located on the light exit side of the light diverging section and gathering light rays exiting the light diverging section; and/or
The first light adjustment portion includes a second light adjustment section located on a light emitting side of the light collection section and emitting light rays emitted by the light collection section.
In the above display panel, in the flattened state, at least a partial area of the display substrate located in the bendable region includes at least one of a light collecting section and a light diverging section, and the first light adjusting portion of the light adjusting layer includes at least one of a first light adjusting section and a second light adjusting section. The first light adjusting section is positioned on the light emitting side of the light diverging section and gathers the light rays emitted by the light diverging section, and the second light adjusting section is positioned on the light emitting side of the light gathering section and diverges the light rays emitted by the light gathering section. Therefore, the first light adjusting section is arranged on the light adjusting layer corresponding to the light scattering section, the first light adjusting section is used for collecting light rays emitted by the light scattering section, the second light adjusting section is arranged on the light adjusting layer corresponding to the light collecting section, the second light adjusting section is used for scattering the light rays emitted by the light collecting section, the light rays emitted from the light adjusting layer are finally and normally emitted after being adjusted, the light emitting brightness of the bendable region is prevented from being influenced by the light collecting section and the light scattering section, and folds which can be felt by a user when the display panel is flattened are weakened.
In one embodiment, when the display panel is in a flattened state, a partial region of the display substrate is in a wrinkled state and includes a convex fold configured as the light diverging section; wherein the convex folds are convex towards the light emitting side of the display substrate;
the first light adjusting section is positioned on the light emergent side of the convex folds and gathers light rays emergent from the convex folds.
In one embodiment, when the display panel is in a flattened state, a partial region of the display substrate is in a wrinkled state and includes a concave fold configured as the light collecting section; wherein the concave folds are recessed toward a backlight side of the display substrate;
the second light adjusting section is positioned on the light emitting side of the concave folds and diverges light rays emitted by the concave folds.
In one embodiment, when the display panel is in a flattened state, a partial region of the display substrate is in a wrinkled state and includes a convex fold configured as the light diverging section and a concave fold configured as the light converging section; the convex folds are raised towards the light emitting side of the display substrate, and the concave folds are recessed towards the backlight side of the display substrate;
wherein, the bending axis of the display panel extends along a first direction, and the convex folds and the concave folds are alternately arranged in sequence along a second direction intersecting with the first direction; the first light adjusting section is located on the light emitting side of the convex folds and gathers light rays emitted by the convex folds, and the second light adjusting section is located on the light emitting side of the concave folds and diverges light rays emitted by the concave folds.
In one embodiment, the first light-adjusting section is configured as a convex lens and the second light-adjusting section is configured as a concave lens;
preferably, the light-adjusting layer is a light-extracting layer.
In one embodiment, the display panel has a non-bending region adjacent to the bending region, and the light adjusting layer includes a second light adjusting part located at the non-bending region;
the refractive index of the first light adjustment section is greater than the refractive index of the second light adjustment section.
In one embodiment, the display panel has a non-bending region adjacent to the bending region, and the light adjusting layer includes a second light adjusting part located at the non-bending region;
the refractive index of the second light adjustment section is smaller than the refractive index of the second light adjustment section.
A manufacturing method of a display panel comprises the following steps:
providing a display substrate;
evaporating a first light adjusting part on the light emitting side of a display substrate by adopting an evaporation source to form a light adjusting layer on the display substrate, and manufacturing a display panel;
wherein the first light adjustment part is positioned in a bendable region of the display panel, and when the display panel is in a flattened state, at least part of the area of the display substrate positioned in the bendable region is in a wrinkled state and comprises at least one of a light divergence section and a light collection section;
the first light adjustment portion includes a first light adjustment section located on a light-emitting side of the light diverging section and gathering light rays emitted by the light diverging section; and/or
The first light adjustment portion includes a second light adjustment section located on a light emitting side of the light collection section and emitting light rays emitted by the light collection section.
In one embodiment, the step of forming the light adjustment layer on the display substrate by vapor deposition of the first light adjustment portion on the light emitting side of the display substrate by the evaporation source, and manufacturing the display panel specifically includes:
the first light adjustment portion is vapor deposited on a display substrate using a linear evaporation source, and by adjusting the speed of relative movement between the display substrate and the linear evaporation source, a first light adjustment portion including the first light adjustment section and/or the second light adjustment section is formed.
A display terminal comprises the display panel.
Drawings
FIG. 1 is a schematic diagram of a display panel according to an embodiment of the invention;
FIG. 2 is a schematic cross-sectional view of the display panel of FIG. 1;
FIG. 3 is a schematic view of a light adjusting layer in the display panel shown in FIG. 2;
FIG. 4 is a microstructure of the light modulating layer shown in FIG. 3;
fig. 5 is a schematic light-emitting diagram of a display panel in the prior art.
100. A display panel; 101. a bendable region; 103. a non-inflection region; 10. a display substrate; 121. convex wrinkles; 123. concave folds; 30. a light adjustment layer; 32. a first light adjustment section; 321. a first light adjustment section; 323. a second light adjustment section; 33. a light adjustment sub-section; 34. a second light adjustment section; 201. and a bending area.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
In the specification, the side of the display substrate used for image display is the light-emitting side, and the side of the display substrate facing away from the light-emitting side is the backlight side.
Referring to fig. 5, as described in the background art, when the conventional foldable flexible display screen is flattened, a person can feel folds with alternate brightness visually, and the inventor has found that the root cause of this problem is that after the flexible display screen is bent several times, the material of the bending region 201 will generate folds under the action of tensile and compressive stress, and particularly, the bending region 201 will form concave-convex folds 121 at least at a microscopic level. For the fold which is in a convex shape, the fold is convexly curved to the light emitting side and can drive emergent light to be obliquely dispersed, so that the emergent light is outwards dispersed from the center of the convex fold, and the brightness of the area is reduced. Meanwhile, for the sunken folds, the folds can drive emergent light to be concentrated obliquely when being concavely bent relative to the emergent side, so that the emergent light is concentrated towards the center of the sunken folds, and the brightness of the area is improved. The brightness of the light from the bending area 201 is changed, so that a person can visually feel the crease.
Referring to fig. 1-2, in an embodiment of the present invention, a display panel 100 is provided, the display panel 100 has a bendable region 101 and a non-bendable region 103 adjacent to the bendable region 101, the display panel 100 is used for manufacturing a foldable display terminal, and when a user uses the display terminal, the display terminal is folded around the bendable region 101 to realize a folding function. In addition, the display panel 100 has uniform brightness of the light emitted from the bendable region 101 when being flattened for use, and visually weakens the crease of the bendable region 101, so that the above technical problem can be preferably solved.
Specifically, the bending axis of the bendable region 101 extends along the first direction, and when the user folds the display terminal, the display panel 100 is driven to fold around the bending axis of the bendable region 101.
The display panel 100 includes a display substrate 10, the display panel 10 includes a driving substrate, a display device and a packaging layer, the display device is disposed on the driving substrate, the driving substrate is used for inputting a driving current to the display device to control the display device to emit light; the encapsulation layer encapsulates the display device to protect the light emitting material in the display device. In particular, the display device may include a first electrode, a second electrode, and an organic light emitting layer between the first electrode and the second electrode. One of the first electrode and the second electrode may be a cathode, and the other of the first electrode and the second electrode may be an anode, and the polarities of the first electrode and the second electrode are specifically set correspondingly according to the requirements, which is not limited herein. The organic light emitting layer is located between the cathode and the anode, and electrons injected from the cathode and holes injected from the anode are combined with each other in the organic light emitting layer to form excitons, which emit light when the excitons release energy, thereby realizing the display function of the display panel 100.
Referring to fig. 1-3, the display panel 100 further includes a light adjusting layer 30, and the light adjusting layer 30 is formed on the light emitting side of the display substrate 10. The light-emitting side of the display substrate 10 emits light, and part of the light with a large incident angle is reflected back into the display substrate 10 and cannot be emitted. Therefore, the light adjusting layer 30 is formed on the light emitting side of the display substrate 10 to change the transmission path of the light to reduce the light confined in the display substrate 10.
In some embodiments, the light adjusting layer 30 includes a first light adjusting portion 32 located in the bendable region 101, where the bendable region 101 is creased when the display panel 100 is folded and flattened for multiple times, and the first light adjusting portion 32 is subjected to differentiation treatment to uniformly adjust the brightness of the bendable region 101, so as to weaken the crease perceived by the user in the bending region when the display panel 100 is flattened for use.
When the display panel 100 is in the flattened state, at least a partial area of the display substrate 10 located in the bendable region 101 is in the wrinkled state and includes at least one of a light diverging section and a light converging section. After the display panel 100 is bent around the bending axis of the bendable region 101 for a plurality of times, if the display panel 100 is switched to a flattened state, the material inside the bendable region 101 cannot be completely deformed, at least a part of the area of the display substrate 10 located in the bendable region 101 is in a wrinkled state, and the light emitting effect of the display panel 100 is affected along with the fluctuation of the display substrate 10 in the bendable region 101. For example, at least a part of the area of the display substrate 10 in the bendable region 101 may form a light diverging section for diverging the outgoing light, or may form a light converging section for converging the outgoing light, or may form a light diverging section for diverging the outgoing light and a light converging section for converging the outgoing light.
In some embodiments, at least a portion of the display substrate 10 located in the bendable region 101 includes a light diverging section in the flattened state, and the first light adjusting part 32 includes a first light adjusting section 321, where the first light adjusting section 321 is located at the light emitting side of the light diverging section and gathers the light emitted from the light diverging section. Therefore, the first light adjusting section 321 is disposed on the light diverging section corresponding to the light diverging section, the light exiting from the light diverging section is collected by the first light adjusting section 321, and the light exiting from the light adjusting layer 30 is finally and normally exiting after being adjusted, so that the bendable region 101 is prevented from reducing the brightness of the exiting light due to the existence of the light diverging section, and the crease that can be felt by the user when the display panel 100 is flattened is weakened.
Further, when the display panel 100 is in the flattened state, at least a partial region of the display substrate 10 is in the wrinkled state and includes the convex wrinkled 121 configured as a light diverging section. Wherein the convex folds 121 are convex towards the light-emitting side of the display substrate 10. It is understood that the side of the display substrate 10 for image display is the light emitting side, and the side of the display substrate 10 facing away from the light emitting side is the backlight side. When the display panel 100 is used in a flattened state, at least a part of the display substrate 10 located in the bendable region 101 has raised convex folds 121, and the convex folds 121 are light-diverging segments as the convex folds 121 bend to cause the outgoing light to diverge. The first light adjusting section 321 is located on the light emitting side of the convex folds 121 and gathers the light emitted from the convex folds 121, so that the first light adjusting section 321 capable of gathering the light is arranged corresponding to the convex folds 121, so that the emergent light originally diverging from the convex folds 121 reduces the emergent area and gathers the emergent light originally diverging to the two convex folds 121. Thus, the light passing through the first light adjusting section 321 and adjusting the bendable region 101 can emit at uniform brightness, so as to prevent the user from noticing a crease different from the brightness of the non-bendable region 103 when the display panel 100 is used in a flattened state.
In a specific embodiment, the first light adjusting section 321 is configured as a convex lens, so as to adjust the light emitted by the light emitting section by using the principle that the convex lens can collect light, and the light emitting brightness of the uniformly bendable region 101 in the flattened state.
In another embodiment, the light adjusting layer 30 has the second light adjusting portion 34 located at the non-bending region 103, and the refractive index of the first light adjusting section 321 is greater than that of the second light adjusting portion 34. The first light adjusting section 321 corresponds to the light diverging section, and improves the refractive index of the first light adjusting section 321, so that the emergent light originally diverged by the light diverging section reduces the emergent area, and further gathers the emergent light originally diverged, so that the bendable region 101 can vertically emit the light. Thus, the brightness of the light output from the bendable region 101 is close to the brightness of the light output from the non-bendable region 103, so as to weaken the crease felt by the user when the display panel 100 is used in a flattened state.
In still another embodiment, in combination with the above two embodiments, the first light adjustment section 321 is configured as a convex lens, while the refractive index of the first light adjustment section 321 is greater than the refractive index of the second light adjustment section 34. In this way, the first light adjusting section 321 uses two modes of higher refractive index and convex lens to collect the emergent light originally diffused by the light diffusing section, so that the emergent light brightness of the bendable region 101 is further close to the emergent light brightness of the non-bendable region 103, and the crease felt by the user when the display panel 100 is flattened is weakened.
In other embodiments, at least a portion of the display panel 100 in the flattened state is located in the bendable region 101 and includes a light collecting section, and the first light adjusting portion 32 includes a second light adjusting section 323, where the second light adjusting section 323 is located at the light emitting side of the light collecting section and diverges the light emitted from the light collecting section. In this way, the second light adjusting section 323 is disposed on the light collecting section corresponding to the light collecting section, the light emitted from the light collecting section is diffused by the second light adjusting section 323, and the light emitted from the light adjusting layer 30 is finally and normally emitted after being adjusted, so that the bendable region 101 is prevented from improving the brightness of the light due to the existence of the light collecting section, and weakening the crease that can be felt by the user when the display panel 100 is flattened.
Further, when the display panel 100 is in the flattened state, a partial region of the display substrate 10 is in a wrinkled state and includes concave wrinkled 123 configured as a light collecting section. Wherein the concave corrugation 123 is recessed to the backlight side of the display substrate 10. When the display panel 100 is used in a flattened state, at least a part of the display substrate 10 located in the bendable region 10 has concave folds 123, which are concave, and the concave folds 123 are light collecting sections, and the light collecting sections collect outgoing light due to bending of the concave folds 123. The second light adjustment section 323 is located at the light emitting side of the concave fold 123 and diverges the light emitted from the convex fold 121, so that the second light adjustment section 323 capable of diverging the light is arranged corresponding to the concave fold 123, so that the light originally collected and emitted by the concave fold 123 expands the emitting area, diffuses the light originally collected and emitted toward the center of the concave fold 123, and finally, the light emitted from the light adjustment layer 30 is normally emitted after being adjusted, thereby weakening the crease that can be felt by a user when the display panel 100 is flattened and used.
In a specific embodiment, the second light adjusting section 323 is configured as a concave lens, so as to adjust the outgoing light of the light collecting section by utilizing the principle that the concave lens can diverge the light, and diffuse the outgoing light originally collected by the light collecting section, so as to uniformly bend the outgoing light brightness of the area 101, and weaken the crease felt by the user when the display panel 100 is used in a flattened state.
In another embodiment, the light adjusting layer 30 has a second light adjusting portion 34 located at the non-bending region 103, and the refractive index of the second light adjusting section 323 is smaller than that of the second light adjusting portion 34. The second light adjusting section 323 corresponds to the light collecting section, and reduces the refractive index of the second light adjusting section 323, so that the light rays originally collected and emitted by the light collecting section can be scattered through the second light adjusting section 323, and the bendable region 101 can vertically emit the light rays. Thus, the brightness of the light output from the bendable region 101 is close to the brightness of the light output from the non-bendable region 103, so as to weaken the crease felt by the user when the display panel 100 is used in a flattened state.
In still another embodiment, in combination with the above two embodiments, the second light adjustment section 323 is configured as a concave lens, while the refractive index of the second light adjustment section 323 is smaller than that of the second light adjustment portion 34. In this way, the second light adjusting section 323 uses two ways of lower refractive index and concave lens to diffuse the light originally collected and emitted by the light collecting section, so that the light emitting brightness of the bendable region 101 is further close to the light emitting brightness of the non-bendable region 103, and the crease felt by the user when the display panel 100 is flattened is weakened.
In still other embodiments, when the display panel 100 is in the flattened state, a partial area of the display substrate 10 is in a folded state and includes a light collecting section and a light diverging section, the first light adjusting portion 32 includes a first light adjusting section 321 and a second light adjusting section 323, the first light adjusting section 321 is located at a light emitting side of the light diverging section and gathers light rays emitted by the light diverging section, and the second light adjusting section 323 is located at a light emitting side of the light collecting section and diverges light rays emitted by the light collecting section. In this way, the first light adjusting section 321 is disposed on the light adjusting layer 30 corresponding to the light diverging section, the light emitted from the light diverging section is collected by the first light adjusting section 321, the second light adjusting section 323 is disposed on the light adjusting layer 30 corresponding to the light converging section, the light emitted from the light converging section is diverged by the second light adjusting section 323, and the light emitted from the light adjusting layer 30 is finally and normally emitted after being adjusted, so that the brightness of the light emitted from the bending area is prevented from being improved due to the existence of the light converging section, and folds which can be felt by a user when the display panel 100 is flattened are weakened.
Further, when the display panel 100 is in the flattened state, a partial region of the display substrate 10 is in the folded state and includes concave folds 123 configured as light collecting sections and convex folds 121 configured as light diverging sections, the convex folds 121 and the concave folds 123 being alternately arranged in order along a second direction intersecting the first direction. The convex wrinkles 121 protrude toward the light emitting side of the display substrate 10, and the concave wrinkles 123 recess toward the backlight side of the display substrate 10. When the display panel 100 is used in a flattened state, the bendable region 101 is in a flattened state, at least part of the display substrate 10 located in the bendable region 10 has concave folds 123 and convex folds 121 alternately arranged, the convex folds 121 are configured as light-diverging sections as the convex folds 121 are bent to cause the outgoing light to diverge; as the bending of the concave folds 123 causes the collection of the outgoing light, the concave folds 123 are configured as light collection segments.
The first light adjusting section 321 is located on the light emitting side of the convex folds 121 and gathers the light emitted from the convex folds 121, so that the first light adjusting section 321 capable of gathering the light is arranged corresponding to the convex folds 121, so that the emergent light originally diverging from the convex folds 121 reduces the emergent area and gathers the emergent light originally diverging to the two convex folds 121. The second light adjustment section 323 is located at the light emitting side of the concave fold 123 and diverges the light emitted from the convex fold 121, so that the second light adjustment section 323 capable of diverging the light is disposed corresponding to the concave fold 123, so that the light originally collected and emitted by the concave fold 123 expands the emitting area and diffuses the light originally collected and emitted to the center of the concave fold 123. In this way, the light emitted from the light adjustment layer 30 is finally adjusted to be normally emitted through the first light adjustment section 321 and the second light adjustment section 323, so that the crease perceived by the user when the display panel 100 is flattened is reduced.
In a specific embodiment, the second light adjusting section 323 is configured as a concave lens, so as to adjust the outgoing light of the light collecting section by utilizing the principle that the concave lens can diverge the light, and the diffused light collecting section originally collects the outgoing light; the second light adjusting section 323 is configured as a concave lens to adjust the outgoing light of the light condensing section by utilizing the principle that the concave lens can diverge the light, and the diffused light condensing section originally condenses the outgoing light. In this way, the brightness of the light output from the bendable region 101 is uniform, and the crease felt by the user when the display panel 100 is flattened is reduced.
In another embodiment, the light adjusting layer 30 has a second light adjusting portion 34 located at the non-bending region 103, the refractive index of the first light adjusting section 321 is greater than the refractive index of the second light adjusting portion 34, and the refractive index of the second light adjusting section 323 is less than the refractive index of the second light adjusting portion 34. The first light adjusting section 321 corresponds to the light diverging section, and improves the refractive index of the first light adjusting section 321, so that the emergent light originally diverged by the light diverging section reduces the emergent area, and further gathers the emergent light originally diverged, so that the bendable region 101 can vertically emit the light. The second light adjusting section 323 corresponds to the light collecting section, and reduces the refractive index of the second light adjusting section 323, so that the light rays originally collected and emitted by the light collecting section can be scattered through the second light adjusting section 323, and the bendable region 101 can vertically emit the light rays. Thus, the brightness of the light output from the bendable region 101 is close to the brightness of the light output from the non-bendable region 103, so as to weaken the crease felt by the user when the display panel 100 is used in a flattened state.
In yet another embodiment, in combination with the above two embodiments, the first light adjustment section 321 is configured as a convex lens and the second light adjustment section 323 is configured as a concave lens, while the refractive index of the first light adjustment section 321 is greater than the refractive index of the second light adjustment section 34, and the refractive index of the second light adjustment section 323 is less than the refractive index of the second light adjustment section 34. In this way, the brightness of the light output from the bendable region 101 is further close to the brightness of the light output from the non-bendable region 103, so as to weaken the crease felt by the user when the display panel 100 is flattened.
Referring to fig. 4, in any of the above embodiments, the first light adjusting section 321 and the second light adjusting section 323 include a plurality of light adjusting sub-sections 33 with different thicknesses, the plurality of light adjusting sub-sections 33 are arranged along a second direction intersecting with the bending axis, the plurality of light adjusting sub-sections 33 in the first light adjusting section 321 can be combined to form a convex lens or a concave lens, and the plurality of light adjusting sub-sections 33 in the second light adjusting section 323 can be combined to form a convex lens or a concave lens.
In the display panel 100 described above, when the display panel 100 is in the flattened state, at least a partial region of the display substrate 10 located in the bendable region 101 is in the wrinkled state and includes at least one of the light collecting section and the light diverging section, and the first light adjusting part 32 of the light adjusting layer 30 includes at least one of the first light adjusting section 321 and the second light adjusting section 323. The first light adjusting section 321 is located at the light emitting side of the light diverging section and gathers the light emitted by the light diverging section, and the second light adjusting section 323 is located at the light emitting side of the light converging section and diverges the light emitted by the light converging section. Thus, the first light adjusting section 321 is disposed on the corresponding light diverging section, the first light adjusting section 321 is used for gathering the light emitted from the light diverging section, the second light adjusting section 323 is disposed on the corresponding light converging section, the second light adjusting section 323 is used for diverging the light emitted from the light converging section, the light emitted from the light adjusting layer 30 is finally and normally emitted after being adjusted, the bendable region 101 is prevented from influencing the brightness due to the light converging section and the light diverging section, and the crease which can be felt by a user when the display panel 100 is flattened is weakened.
Specifically, the display substrate 10 may form wrinkles of different shapes on the light-emitting side according to the folding direction. For example, the display panel 100 is folded toward the light emitting side, the light emitting side is folded inside after the display panel 100 is folded, and at least a partial area of the display substrate 10 located in the bendable region 101 is M-shaped after the display panel 100 is flattened, including two convex folds 121 and a concave fold 123 connected between the two convex folds 121. For another example, the display panel 100 is folded toward the backlight side, the light emitting side of the display panel 100 faces outward after the display panel 100 is folded, and at least a portion of the display substrate 10 located in the bendable region 101 is W-shaped after the display panel 10 is flattened, and includes two concave folds 123 and a convex fold 121 connected between the two concave folds 123. The first light adjusting portion 32 is disposed corresponding to a specific form of the display substrate 10 located in the bendable region 101, and the light collecting section is disposed corresponding to the convex fold 121, and the light diverging section is disposed corresponding to the concave fold 123, so as to adjust the light to be emitted uniformly, weaken the crease visually perceived when the display panel 100 is used in the flattened state, and improve the optical performance.
Specifically, the light adjustment layer may be any other film layer disposed on the light emitting surface of the display substrate, such as a light extraction layer; or a film layer additionally arranged on the light emitting side of the display substrate.
In an embodiment of the present invention, a display terminal is further provided, including the display panel 100. The display terminal can be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, vehicle-mounted equipment, wearable equipment or internet of things equipment.
In an embodiment of the present invention, a method for manufacturing a display panel 100 is provided, including the following steps:
in step S100, a display substrate 10 is provided.
In step S300, the first light adjustment portion 32 is vapor-deposited on the light emitting side of the display substrate 10 by using an evaporation source to form the light adjustment layer 30 on the display substrate 10, thereby manufacturing the display panel 100.
Wherein the first light adjustment portion 32 is located in the bendable region 101 of the display panel 100, and when the display panel 100 is in the flattened state, at least a partial area of the display substrate 10 located in the bendable region 101 is in the wrinkled state and includes at least one of a light diverging section and a light converging section; the first light adjustment part 32 includes a first light adjustment section 321, the first light adjustment section 321 being located at the light emitting side of the light diverging section and gathering light rays exiting the light diverging section; and/or the first light adjusting part 32 includes a second light adjusting section 323, the second light adjusting section 323 being located at the light emitting side of the light collecting section and diverging the light rays emitted by the light collecting section.
In the flattened state of the display panel 100, at least a portion of the display substrate 10 located in the bendable region 101 includes at least one of a light collecting section and a light diverging section, and the first light adjusting portion 32 of the light adjusting layer 30 includes at least one of a first light adjusting section 321 and a second light adjusting section 323. The first light adjusting section 321 is located at the light emitting side of the light diverging section and gathers the light emitted by the light diverging section, and the second light adjusting section 323 is located at the light emitting side of the light converging section and diverges the light emitted by the light converging section. In this way, the first light adjusting section 321 is disposed on the light adjusting layer 30 corresponding to the light diverging section, the light emitted from the light diverging section is collected by the first light adjusting section 321, the second light adjusting section 323 is disposed on the light adjusting layer 30 corresponding to the light collecting section, the light emitted from the light converging section is diverged by the second light adjusting section 323, and the light emitted from the light adjusting layer 30 is finally and normally emitted after being adjusted, so that the light brightness of the bendable region 101 is prevented from being influenced by the light converging section and the light diverging section, and folds which can be felt by a user when the display panel 100 is flattened are weakened.
Further, when the light adjustment layer 30 is formed on the light emitting side of the display substrate 10, the light adjustment layer 30 is vapor deposited on the display substrate 10 by using a linear evaporation source, and the first light adjustment section 321 and/or the second light adjustment section 323 are formed by adjusting the speed of relative movement between the display substrate 10 and the linear evaporation source. For example, the first light adjustment section 321 is configured as a convex lens, and the second light adjustment section 323 is configured as a concave lens. When the moving speed of the display substrate 10 relative to the linear evaporation source is fast, the thickness of the formed film layer is thin; when the moving speed of the display substrate 10 relative to the linear evaporation source is slower, the thickness of the film layer is thicker, so that the concave lenses and the convex lenses are alternately arranged by constructing the thicknesses of the different positions of the first light adjusting section 321 to be different, and the light emitting path of the bending part 12 is correspondingly improved, so that the brightness of the light emitting light when the uniform bendable region 101 is in a flattened state is reduced, and the crease perceived visually is weakened.
Referring to fig. 4, specifically, the first light adjusting section 321 and the second light adjusting section 323 each include a plurality of light adjusting sub-sections 33 with different thicknesses, the plurality of light adjusting sub-sections 33 are arranged along a second direction intersecting with the bending axis, the plurality of light adjusting sub-sections 33 in the first light adjusting section 321 can be combined to form a convex lens or a concave lens, and the plurality of light adjusting sub-sections 33 in the second light adjusting section 323 can be combined to form a convex lens or a concave lens.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (9)
1. A display panel, the display panel comprising a bendable region, the display panel comprising:
when the display panel is in a flattened state, at least part of the display substrate positioned in the bendable region is in a wrinkled state and comprises a light divergence section and a light collection section; a kind of electronic device with high-pressure air-conditioning system
The light adjusting layer is positioned on the light emitting side of the display substrate and comprises a first light adjusting part positioned in the bendable region;
wherein the first light adjustment portion comprises a first light adjustment section located on the light exit side of the light diverging section and gathering light rays exiting the light diverging section;
and, the first light adjustment portion includes a second light adjustment section located at a light emitting side of the light collection section and emitting light rays emitted by the light collection section;
the display panel is provided with a non-bending region adjacent to the bendable region, and the light adjusting layer comprises a second light adjusting part positioned in the non-bending region;
the refractive index of the first light adjustment section is greater than the refractive index of the second light adjustment section; and/or the refractive index of the second light adjusting section is smaller than that of the second light adjusting part, so that the light-emitting brightness of the bendable region is close to that of the non-bending region.
2. The display panel of claim 1, wherein when the display panel is in a flattened state, a partial region of the display substrate is in a wrinkled state and includes convex wrinkles configured as the light diverging section; wherein the convex folds are convex towards the light emitting side of the display substrate;
the first light adjusting section is positioned on the light emergent side of the convex folds and gathers light rays emergent from the convex folds.
3. The display panel of claim 1, wherein when the display panel is in a flattened state, a partial region of the display substrate is in a wrinkled state and includes a concave fold configured as the light collecting section; wherein the concave folds are recessed toward a backlight side of the display substrate;
the second light adjusting section is positioned on the light emitting side of the concave folds and diverges light rays emitted by the concave folds.
4. The display panel according to claim 1, wherein when the display panel is in a flattened state, a partial region of the display substrate is in a wrinkled state and includes a convex wrinkle configured as the light diverging section configuration and a concave wrinkle configured as the light converging section; the convex folds are raised towards the light emitting side of the display substrate, and the concave folds are recessed towards the backlight side of the display substrate;
wherein, the bending axis of the display panel extends along a first direction, and the convex folds and the concave folds are alternately arranged in sequence along a second direction intersecting with the first direction; the first light adjusting section is located on the light emitting side of the convex folds and gathers light rays emitted by the convex folds, and the second light adjusting section is located on the light emitting side of the concave folds and diverges light rays emitted by the concave folds.
5. The display panel of claim 1, wherein the first light-adjusting section is configured as a convex lens and the second light-adjusting section is configured as a concave lens.
6. The display panel of claim 1, wherein the light-modifying layer is a light extraction layer.
7. The manufacturing method of the display panel is characterized by comprising the following steps of:
providing a display substrate;
evaporating a first light adjusting part on the light emitting side of a display substrate by adopting an evaporation source to form a light adjusting layer on the display substrate, and manufacturing a display panel;
wherein the first light adjusting part is positioned in a bendable region of the display panel, and when the display panel is in a flattened state, at least part of the area of the display substrate positioned in the bendable region is in a wrinkled state and comprises a light divergence section and a light convergence section;
the first light adjustment portion includes a first light adjustment section located on a light-emitting side of the light diverging section and gathering light rays emitted by the light diverging section;
and, the first light adjustment portion includes a second light adjustment section located at a light emitting side of the light collection section and emitting light rays emitted by the light collection section;
the display panel is provided with a non-bending region adjacent to the bendable region, and the light adjusting layer comprises a second light adjusting part positioned in the non-bending region;
the refractive index of the first light adjustment section is greater than the refractive index of the second light adjustment section; and/or the refractive index of the second light adjusting section is smaller than that of the second light adjusting part, so that the light-emitting brightness of the bendable region is close to that of the non-bending region.
8. The method of manufacturing a display panel according to claim 7, wherein the step of forming the light adjusting layer on the display substrate by vapor deposition of the first light adjusting portion on the light emitting side of the display substrate by the vapor source, and manufacturing the display panel comprises:
the first light adjustment portion is vapor deposited on a display substrate using a linear evaporation source, and by adjusting the speed of relative movement between the display substrate and the linear evaporation source, a first light adjustment portion including the first light adjustment section and/or the second light adjustment section is formed.
9. A display terminal comprising a display panel as claimed in any one of the preceding claims 1-6.
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