CN115793324A - Display module and display device - Google Patents
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- CN115793324A CN115793324A CN202211583172.7A CN202211583172A CN115793324A CN 115793324 A CN115793324 A CN 115793324A CN 202211583172 A CN202211583172 A CN 202211583172A CN 115793324 A CN115793324 A CN 115793324A
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- 230000010287 polarization Effects 0.000 claims abstract description 36
- 230000001502 supplementing effect Effects 0.000 claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims description 51
- 239000013589 supplement Substances 0.000 claims description 18
- 239000000758 substrate Substances 0.000 claims description 14
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- 238000010586 diagram Methods 0.000 description 15
- 230000009286 beneficial effect Effects 0.000 description 4
- 239000004973 liquid crystal related substance Substances 0.000 description 4
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Abstract
The invention discloses a display module and a display device, wherein the display module comprises a first display area and a second display area; the first polaroid is positioned on one side of the light-emitting surface of the display panel; the light sensing element is positioned in the first display area and is positioned on one side of the display panel far away from the first polaroid; the second polaroid is positioned in the first display area and between the display panel and the light sensing element; the light supplementing structure is positioned in the first display area and comprises a first light source and a compensation film, and the first light source is positioned on one side, away from the display panel, of the second polarizer; the compensation film is positioned between the display panel and the second polarizer. Light is provided through the first light source and is used for the light filling, and the compensation film changes the polarization state direction that partly passes through the oblique light of second polaroid, makes the oblique light pass through first polaroid, assembles to first display area central zone, carries out the light filling to first display area central zone, effectively promotes the luminance in first display area central zone, promotes the display effect.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display module and a display device.
Background
With the continuous development of display technology, a high screen occupation ratio becomes a research hotspot in the technical field of display, people put forward a concept of a full screen, wherein the full screen means that the front of the display screen is a screen, namely, no special space is available for arranging devices such as a front camera, a receiver and the like on the front of the display screen, but the devices are arranged below the display screen, but the devices can shield light provided by backlight, so that the brightness of the corresponding area of the display screen and the devices is insufficient, and even a black area appears.
Therefore, a design for supplementing light to the corresponding area of the display screen and the device is needed.
Disclosure of Invention
In view of the above, the present invention provides a display module and a display device, which are used for supplementing light to a first display area of a display panel.
In one aspect, the invention provides a display module, which comprises a first display area and a second display area at least partially surrounding the first display area;
the display module comprises a display panel;
the first polaroid is positioned on one side of the light-emitting surface of the display panel;
the light sensing element is positioned in the first display area and on one side of the display panel far away from the first polarizer;
the second polarizer is positioned in the first display area, is positioned between the display panel and the light sensing element along a first direction, and is perpendicular to the display panel along the first direction;
the light supplementing structure is positioned in the first display area and comprises a first light source and a compensation film, the first light source is positioned on one side, away from the display panel, of the second polarizer and is positioned on one side, facing the second display area, of the light sensing element; the compensation film is positioned between the display panel and the second polarizer along the first direction, the extending direction of the transmission axis of the first polarizer is intersected with the extending direction of the transmission axis of the second polarizer, the polarization state direction of part of light penetrating through the second polarizer is changed by the compensation film, and the changed polarization state direction is parallel to the direction of the transmission axis of the first polarizer.
On the other hand, the invention also provides a display device which comprises the display module.
Compared with the prior art, the display module provided by the invention at least realizes the following beneficial effects:
the display module provided by the invention comprises a first display area and a second display area at least partially surrounding the first display area; the display module comprises a display panel; the first polaroid is positioned on one side of the light-emitting surface of the display panel; the light sensing element is positioned in the first display area and is positioned on one side of the display panel far away from the first polaroid; the second polaroid is positioned in the first display area, is positioned between the display panel and the light sensing element along a first direction, and is vertical to the display panel along the first direction; the light supplementing structure is positioned in the first display area and comprises a first light source and a compensation film, the first light source is positioned on one side, away from the display panel, of the second polarizer and is positioned on one side, facing the second display area, of the light sensing element; the compensation film is positioned between the display panel and the second polaroid along the first direction, the extending direction of the transmission axis of the first polaroid is intersected with the extending direction of the transmission axis of the second polaroid, the polarization state direction of part of light rays transmitted through the second polaroid is changed by the compensation film, and the changed polarization state direction is parallel to the direction of the transmission axis of the first polaroid. The first light source provides light for light supplement, when the light provided by the first light source passes through the second polarizer, the light parallel to the extending direction of the transmission axis of the second polarizer passes through the second polarizer and emits to the compensation film, the compensation film changes the polarization state direction of part of the light passing through the second polarizer, the changed polarization state direction is parallel to the direction of the transmission axis of the first polarizer, namely, the light changing the polarization state direction can permeate through the first polarizer, the light supplement is carried out on the first display area, and the large-angle light in the light converges to the central area of the first display area, the brightness of the central area of the first display area can be effectively improved, the uniformity of the light supplement of the first display area is realized, the condition that the brightness or the black area appears in the first display area is avoided, and the display effect is improved.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described technical effects simultaneously.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic structural diagram of a display module according to the present invention;
FIG. 2 isbase:Sub>A cross-sectional view taken along line A-A' of FIG. 1;
FIG. 3 is a graph of the amount of phase retardation of a compensation film versus viewing angle brightness;
FIG. 4 is a view field brightness diagram of the light filling structure;
FIG. 5 is a view field brightness diagram of another light supplement structure;
FIG. 6 is a view field brightness diagram of the light filling structure;
FIG. 7 is a view of a luminance chart of another field of view of the light filling structure;
FIG. 8 is a view of a luminance chart of another field of view of the light filling structure;
FIG. 9 is a view field luminance diagram of a light filling structure;
FIG. 10 is a schematic view of another structure of a display module according to the present invention;
FIG. 11 is another sectional view taken along line A-A' of FIG. 1;
FIG. 12 isbase:Sub>A further sectional view taken along line A-A' of FIG. 1;
FIG. 13 isbase:Sub>A further sectional view taken along line A-A' of FIG. 1;
FIG. 14 is a schematic view of another structure of the display module according to the present invention;
FIG. 15 is a cross-sectional view taken along line B-B' of FIG. 14;
FIG. 16 isbase:Sub>A further sectional view taken along line A-A' of FIG. 1;
fig. 17 is a schematic plan view of a display device according to an embodiment of the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Referring to fig. 1 and fig. 2, fig. 1 isbase:Sub>A schematic structural diagram ofbase:Sub>A display module according to the present invention, and fig. 2 isbase:Sub>A cross-sectional view taken alongbase:Sub>A directionbase:Sub>A-base:Sub>A' in fig. 1 to illustratebase:Sub>A specific embodiment ofbase:Sub>A display module 100 according to the present invention, which includes: a first display area DA1 and a second display area DA2 at least partially surrounding the first display area DA 1;
the display module 100 includes a display panel 01;
the first polarizer 02 is positioned on one side of the light-emitting surface of the display panel 01;
the light sensing element 03 is positioned in the first display area DA1 and on one side of the display panel 01 far away from the first polarizer 02;
a second polarizer 04 located in the first display area DA1 along a first direction X, where the second polarizer 04 is located between the display panel 01 and the light sensing element 03, and the first direction X is a direction perpendicular to the display panel 01;
the light supplementing structure 05 is located in the first display area DA1 and comprises a first light source 06 and a compensation film 07, wherein the first light source 06 is located on one side, away from the display panel 01, of the second polarizer 04 and located on one side, facing the second display area DA2, of the light sensing element 03; along the first direction X, the compensation film 07 is located between the display panel 01 and the second polarizer 04, the extending direction of the transmission axis of the first polarizer 02 intersects with the extending direction of the transmission axis of the second polarizer 04, the compensation film 07 changes the polarization direction of a part of the light rays which pass through the second polarizer 04, and the changed polarization direction is parallel to the direction of the transmission axis of the first polarizer 02.
It should be noted that, in fig. 1, only the first display area DA1 is shown in the central area of the display panel 01, that is, the second display area DA2 is disposed around the first display area DA1, but of course, the present invention is not limited thereto, and the first display area DA1 may also be located in the edge area of the display panel 01, that is, the outer edge of the first display area DA1 only partially connects the second display area DA2; fig. 1 only illustrates that the orthographic projection of the first display area DA1 on the display panel 01 is a circle, but of course, the orthographic projection of the first display area DA1 on the display panel 01 may also be a rectangle or other shapes, and the shape of the orthographic projection of the first display area DA1 on the display panel 01 may be adjusted according to actual needs; the first light source 06 can be selected to emit light two
The polar tube, of course, the first light source 06 may also adopt other types of light sources, this embodiment does not specifically limit this to 5, and the display panel 01 is preferably a liquid crystal display panel.
It can be understood that the first polarizer 02 is located on one side of the light emitting surface of the display panel 01, that is, the first polarizer 02 covers the first display area DA1 and at least partially covers the second display area DA2; the first light source 06 is located on a side of the second polarizer 04 away from the display panel 01 and along the first direction X
In the above, the compensation film 07 is located between the display panel 01 and the second polarizer 04, so along the first direction X0, the first light source 06 may overlap or may not overlap the compensation film 07, and it is sufficient to ensure that part of the light emitted by the first light source 06 can be emitted to the compensation film 07. The first light source 06 is arranged for light supplement, the first light source 06 provides divergent light, the light irradiates the second polarizer 04, the light with the polarization state direction parallel to the transmission axis direction of the second polarizer 04 penetrates through the second polarizer 04, and the second polarized light penetrates through the second polarizer 04
The light of the sheet 04 is emitted to the compensation film 07, when the light passes through the compensation film 07, the polarization state of part of the light is changed from the direction parallel to the transmission axis of the second polarizer 04 to the direction parallel to the transmission axis of the first polarizer 02, therefore, the light with the changed polarization state can transmit the first polarizer 02, and in the part of the light transmitting the first polarizer 02, the light with large angle exists, and the light with large angle is emitted to the central area of the first display area DA1, so that the brightness of the central area of the first display area DA1 is improved, and the brightness of the central area of the first display area DA1 is avoided
The situation that a black area or too low brightness occurs in the central area of the first display area DA1 is avoided, so that the brightness of the whole first display area DA1 is more uniform, and the display effect is improved.
Compared with the prior art, the display module 100 provided by the embodiment at least has the following advantages:
the display module 100 provided by the invention comprises a first display area DA1 and a second display area DA2 at least partially surrounding the first display area DA 1; the display module 100 includes a display panel 01; first bias
The optical sheet 02 is positioned on one side of the light-emitting surface of the display panel 01; the light sensing element 03 is located in the first display area DA1,5 and on a side of the display panel 01 away from the first polarizer 02; the second polarizer 04 is located on the first display
A display area DA1, along a first direction X, the second polarizer 04 is located between the display panel 01 and the light sensing element 03, and the first direction X is a direction perpendicular to the display panel 01; the light supplementing structure 05 is located in the first display area DA1 and includes a first light source 06 and a compensation film 07, the first light source 06 is located on one side of the second polarizer 04 away from the display panel 01, and is located on one side of the light sensing element 03 facing the second display area DA2; along the first direction X, the compensation film 07 is located between the display panel 01 and the second polarizer 04, the extending direction of the transmission axis of the first polarizer 02 intersects with the extending direction of the transmission axis of the second polarizer 04, the compensation film 07 changes the polarization direction of a part of light rays passing through the second polarizer 04, and the changed polarization direction is parallel to the direction of the transmission axis of the first polarizer 02. The first light source 06 provides light for light supplement, when the light provided by the first light source 06 passes through the second polarizer 04, the light parallel to the extending direction of the transmission axis of the second polarizer 04 transmits through the second polarizer 04 to the compensation film 07, the compensation film 07 changes the polarization state direction of part of the light transmitting through the second polarizer 04, the changed polarization state direction is parallel to the direction of the transmission axis of the first polarizer 02, namely, the light with the changed polarization state direction can transmit through the first polarizer 02 to supplement light to the first display area DA1, and the large-angle light in the light is converged to the central area of the first display area DA1, so that the brightness of the central area of the first display area DA1 can be effectively improved, the light supplement of the first display area DA1 is uniform, the situation that the brightness of the first display area DA1 is uneven or a black area is avoided, and the display effect is improved.
In some alternative embodiments, with continued reference to fig. 1 and 2, the compensation film 07 is an O-plate type compensation film 07.
It can be understood that an angle formed by the optical axis of the O-plate type compensation film 07 and the plane of the display panel 01 is an acute angle, and when light passes through the O-plate type compensation film 07, the polarization state direction of the light with the acute angle formed between the transmission direction and the plane of the display panel 01 is changed, that is, the polarization state direction of the oblique light is changed, so that the polarization state direction of the oblique light is parallel to the transmission axis direction of the first polarizer 02; when the light with the transmission direction perpendicular to the plane of the display panel 01 passes through the O-plate type compensation film 07, the O-plate type compensation film 07 does not compensate the light with the transmission direction perpendicular to the plane of the display panel 01, so that the polarization state of the light with the transmission direction perpendicular to the plane of the display panel 01 does not change, that is, the polarization state of the perpendicular light does not change, and the polarization state of the perpendicular light is not parallel to the direction of the light transmission axis of the first polarizer 02. When the light directive of seeing through compensating film 07 is first polaroid 02, the oblique light can see through first polaroid 02, and perpendicular light can be absorbed by first polaroid 02, avoids perpendicular light to influence the positive viewing angle luminance, and the central region of first polaroid 02 directive first display area DA1 is passed through to some oblique light, promotes the luminance of the central region of first display area DA1, realizes the homogeneity of light filling, promotes the display effect.
In some alternative embodiments, with continued reference to fig. 1 and 2, the transmittance of the first display area DA1 is greater than the transmittance of the second display area DA 2.
It can be understood that, one side of first display area DA1 keeping away from first polaroid 02 is equipped with light sense component 03, use light sense component 03 as the camera for example, first display area DA1 both need be used for showing, can make the camera see through first display area DA1 and realize the shooting function again, and second display area DA2 only need be used for showing, consequently, the transmissivity that sets up first display area DA1 is greater than the transmissivity of second display area DA2, can shoot at the camera, improve the quantity of the first display area DA1 of seeing through of external light, promote the shooting effect.
In some alternative embodiments, referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, and fig. 9, fig. 3 is a diagram of a phase retardation of a compensation film as a function of a viewing angle luminance, fig. 4 is a view field luminance diagram of a light filling structure, fig. 5 is another view field luminance diagram of the light filling structure, fig. 6 is still another view field luminance diagram of the light filling structure, fig. 7 is still another view field luminance diagram of the light filling structure, fig. 8 is still another view field luminance diagram of the light filling structure, fig. 9 is still another view field luminance diagram of the light filling structure, and a phase retardation of the compensation film 07 is 500nm to 1000nm.
It should be understood that, although only two light supplement structures 05 are illustrated in fig. 2, it is needless to say that, without limitation thereto, referring to fig. 4 to 9, in which fig. 5 is a view luminance graph when the phase retardation of the compensation film 07 is 500nm, fig. 6 is a view luminance graph when the phase retardation of the compensation film 07 is 600nm, fig. 7 is a view luminance graph when the phase retardation of the compensation film 07 is 700nm, fig. 8 is a view luminance graph when the phase retardation of the compensation film 07 is 800nm, fig. 9 is a view luminance graph when the phase retardation of the compensation film 07 is 900nm, it can be seen that the luminance region is smaller as the phase retardation of the compensation film 07 is larger, the angle of light emitted from the compensation film 07 is related to the phase retardation of the compensation film 07, the phase retardation of the compensation film 07 is Δ n · d, where Δ n is an absolute value of liquid crystal ne-no, d is an absolute value of a value of liquid crystal ne-no, and d is an optical path length of light emitted from the compensation film 07 to the compensation film 07 is adjusted by changing the phase retardation of the compensation film 07 to compensate for the light of the central region DA 1.
In some alternative embodiments, with continued reference to fig. 1 and 2, the transmission axis of the first polarizer 02 extends parallel to the first direction X, and the transmission axis of the second polarizer 04 extends parallel to the display panel 01.
It can be understood that the extending direction of the transmission axis of the first polarizer 02 is parallel to the first direction X, and the extending direction of the transmission axis of the second polarizer 04 is parallel to the display panel 01, i.e. the extending direction of the transmission axis of the first polarizer 02 is perpendicular to the extending direction of the transmission axis of the second polarizer 04, and the polarization direction of the light penetrating through the second polarizer 04 is parallel to the extending direction of the transmission axis of the second polarizer 04, so the polarization direction of the light is perpendicular to the extending direction of the transmission axis of the first polarizer 02, and these light are parallel to each other
When the light irradiates the first polarizer 02, the light is absorbed by the first polarizer 02, the compensation film 07 is positioned between the first polarizer 02 and the second polarizer 04 along the first direction X, the compensation film 07 compensates the light penetrating the second polarizer 04, and specifically, because the compensation film 07 is an O-plate type compensation film 07, the O-plate type compensation film 07 compensates the oblique light, so that the polarization direction of the oblique light is parallel to the extending direction of the light transmission axis of the first polarizer 02, and the oblique light penetrates through the first polarizer
The optical sheet 02 is used for compensating the brightness of the first display area DA 1; the O-plate type compensation film 07 does not compensate the vertical light 0, so the polarization direction of the vertical light is not changed, and is perpendicular to the extending direction of the light transmission axis of the first polarizer 02, so the vertical light cannot pass through the first polarizer 02, thereby preventing a large amount of vertical light from being emitted, which causes the over-high brightness of the position corresponding to the first light source 06 in the first display area DA1, and the over-low brightness of the central area of the first display area DA1 to cause the uneven brightness. Of course, the second one can also be provided
The extending direction of the transmission axis of the polarizer 02 is parallel to the display panel 01, and the extending direction of the transmission 5 optical axis of the second polarizer 04 is parallel to the first direction X, which can be adjusted according to actual requirements.
In some optional embodiments, referring to fig. 10, fig. 10 is another schematic structural diagram of the display module provided in the present invention, the number of the light supplement structures 05 is multiple, and the multiple light supplement structures 05 surround the display module
The light sensing elements 03 are arranged;
the direction from the center point of the compensation film 07 of the light supplementing structure 05 to the center point of the light sensing element 03 is
The second direction, the direction in which the optical axis of the compensation film 07 extends, is perpendicular to the second direction.
It should be understood that, in fig. 10, only 4 light supplement structures 05 are illustrated, but the number is not limited thereto, and the number of the light supplement structures 05 may also be 6, 8, and the like, which is not limited to this embodiment
And are not particularly limited. The plurality of light supplementing structures 05 are arranged around the central array of the light sensing element 03, the light emitting direction of the O-plate5 type compensation film 07 is related to the optical axis direction of the O-plate5 type compensation film, and the extension of the optical axis of the compensation film 07 is arranged
The direction can guarantee with the second direction is perpendicular that the central zone of oblique light directive first display area DA1 helps realizing the even light filling of first display area DA1, promotes the display effect.
In some alternative embodiments, referring to fig. 1 and 11, fig. 11 is another cross-sectional view taken alongbase:Sub>A-base:Sub>A' in fig. 1, and the first light source 06 is inclined toward the light-sensing element 03.
It can be understood that the light emitted by the first light source 06 is divergent, wherein the light transmitted in the direction perpendicular to the plane of the compensation film 07 is the most, but the compensation film 07 does not compensate the polarization state direction of the perpendicular light and is absorbed by the first polarizer 02, so that most of the light emitted by the first light source 06 is wasted, and the amount of the light obliquely entering the compensation film 07 is limited; set up the slope of first light source 06 towards light sense component 03, make most light slant that first light source 06 sent inject compensating film 07, compensating film 07 can compensate inclined light to improve light utilization ratio, also can effectively improve the luminance of first display area DA1 central zone, it is even to realize the light filling, promotes display effect.
In some alternative embodiments, with reference to fig. 1 and fig. 11, the first light source 06 includes a light emitting chip 08, a side of the light emitting chip 08 away from the display panel 01 is provided with a first pin 09 and a second pin 10, the second pin 10 is located on a side of the first pin 09 away from the light sensing element 03, and a length of the second pin 10 is greater than a length of the first pin 09 along the first direction X.
It can be understood that the second pins 10 are located on one side of the first pins 09 away from the light sensing element 03, along the first direction X, the length of the second pins 10 is greater than that of the first pins 09, and the light emitting chip 08 supported by the first pins 09 and the second pins 10 is inclined toward the light sensing element 03, so that the amount of light rays which are obliquely incident on the compensation film 07 becomes larger, so as to improve the light supplementing effect on the central area of the first display area DA 1.
In some alternative embodiments, referring to fig. 1 and 12, fig. 12 isbase:Sub>A cross-sectional view taken alongbase:Sub>A-base:Sub>A' direction in fig. 1, the first light source 06 includesbase:Sub>A light emitting chip 08,base:Sub>A side of the light emitting chip 08 away from the display panel 01 is provided withbase:Sub>A substrate 11, andbase:Sub>A height ofbase:Sub>A side of the substrate 11 away from the light sensing element 03 is greater thanbase:Sub>A height ofbase:Sub>A side of the substrate 11 close to the light sensing element 03 along the first direction X.
It is to be understood that, for convenience of illustration, in fig. 12, the substrate 11 is not pattern-filled, and in the first direction X, a height of a side of the substrate 11 away from the light sensing element 03 is greater than a height of a side of the substrate 11 close to the light sensing element 03, so that a side of the substrate 11 close to the second polarizer 04 is inclined toward the light sensing element 03, and the first light source 06 disposed on the side of the substrate 11 close to the second polarizer 04 is also inclined, so that light rays incident into the compensation film 07 in an inclined manner are increased, which is beneficial to improving a light filling effect on the central area of the first display area DA 1.
In some alternative embodiments, with reference to fig. 1, 11 and 12, the first light source 06 includes a light emitting chip 08, a substrate 11 is disposed on a side of the light emitting chip 08 away from the display panel 01, and an encapsulation layer 12 is disposed on a side of the light emitting chip 08 away from the substrate 11, so that if the substrate 11 or the light emitting chip 08 is not tilted, the vertical light emitted from the first light source 06 can be deflected by the encapsulation layer 12, and the vertical light is deflected into the tilted light, thereby improving the light utilization rate.
In some alternative embodiments, referring to fig. 1 and 13, fig. 13 isbase:Sub>A cross-sectional view taken alongbase:Sub>A directionbase:Sub>A-base:Sub>A' in fig. 1, the display module 100 provided in this embodiment further includesbase:Sub>A third polarizer 13 located in the second display area DA2 and onbase:Sub>A side of the display panel 01 away from the first polarizer 02, and an extending direction ofbase:Sub>A transmission axis of the third polarizer 13 is parallel to an extending direction ofbase:Sub>A transmission axis of the second polarizer 04.
It can be understood that the liquid crystal display panel 01 needs two polarizers, which are respectively attached to two sides of the display panel 01 to display the picture, so that the first polarizer 02 is located on one side of the display panel 01, the second polarizer 04 and the third polarizer 13 are located on one side of the display panel 01 away from the first polarizer 02, specifically, the second polarizer 04 is located in the first display area DA1, the third polarizer 13 is located in the second display area DA2, and the first polarizer 02 covers one side of the display panel 01 in front, which can facilitate the manufacturing and save resources.
In some optional embodiments, referring to fig. 14 and fig. 15, fig. 14 is a schematic structural diagram of a display module according to the present invention, fig. 15 is a cross-sectional view taken along direction B-B' in fig. 14, and the display module 100 according to the present embodiment further includes:
a light guide plate 14 located in the second display area DA2 and located on a side of the third polarizer 13 away from the display panel 01;
and a second light source 15 positioned at a side of the light guide plate 14 away from the first display area DA 1.
It can be understood that the display module 100 provided in this embodiment employs a side-in type backlight, light is provided by the second light source 15 and enters the light guide plate 14, and a part of the light is emitted to the second polarizer 04 through the light guide plate 14 and is also used for supplementing light to the first display area DA1, and certainly, a part of the light provided by the first light source 06 is also emitted to the light guide plate 14 and is used for displaying in the second display area DA 2.
In some alternative embodiments, referring to fig. 1 and fig. 16, fig. 16 isbase:Sub>A cross-sectional view taken alongbase:Sub>A-base:Sub>A' direction in fig. 1, and the display module 100 provided in this embodiment further includes:
and a second light source 15 located on a side of the third polarizer 13 away from the display panel 01.
It can be understood that the display module 100 provided in this embodiment adopts a direct-type backlight, the light provided by the second light source 15 is used for displaying the second display area DA2, and the light provided by the second light source 15 near the first light source 06 also contributes to fill light in the first display area DA 1.
Referring to fig. 17, fig. 17 is a schematic plan view of a display device according to an embodiment of the present invention, and a display device 200 according to the embodiment includes the display module 100 according to the embodiment of the present invention. The embodiment of fig. 17 is only an example of a mobile phone, and the display device 200 is described, it should be understood that the display device 200 provided in the embodiment of the present invention may be other display devices 200 having a display function, such as a computer, a television, and a vehicle-mounted display device, and the present invention is not limited thereto. The display device 200 provided in the embodiment of the present invention has the beneficial effects of the display module 100 provided in the embodiment of the present invention, and specific reference may be made to the specific description of the display module 100 in the foregoing embodiments, which is not repeated herein.
According to the embodiment, the display module at least has the following beneficial effects:
the display module provided by the invention comprises a first display area and a second display area at least partially surrounding the first display area; the display module comprises a display panel; the first polaroid is positioned on one side of the light-emitting surface of the display panel; the light sensing element is positioned in the first display area and is positioned on one side of the display panel far away from the first polaroid; the second polaroid is positioned in the first display area and is positioned between the display panel and the light sensing element along a first direction, and the first direction is a direction vertical to the display panel; the light supplementing structure is positioned in the first display area and comprises a first light source and a compensation film, the first light source is positioned on one side of the second polaroid, which is far away from the display panel, and is positioned on one side of the light sensing element, which faces the second display area; the compensation film is positioned between the display panel and the second polaroid along the first direction, the extending direction of the transmission axis of the first polaroid is intersected with the extending direction of the transmission axis of the second polaroid, the polarization state direction of part of light rays which penetrate through the second polaroid is changed by the compensation film, and the changed polarization state direction is parallel to the direction of the transmission axis of the first polaroid. The first light source provides light for light supplement, when the light provided by the first light source passes through the second polarizer, the light parallel to the extending direction of the transmission axis of the second polarizer passes through the second polarizer and emits to the compensation film, the compensation film changes the polarization state direction of part of the light passing through the second polarizer, the changed polarization state direction is parallel to the direction of the transmission axis of the first polarizer, namely, the light changing the polarization state direction can permeate through the first polarizer, the light supplement is carried out on the first display area, and the large-angle light in the light converges to the central area of the first display area, the brightness of the central area of the first display area can be effectively improved, the uniformity of the light supplement of the first display area is realized, the condition that the brightness or the black area appears in the first display area is avoided, and the display effect is improved.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (13)
1. A display module is characterized by comprising a first display area and a second display area at least partially surrounding the first display area;
the display module comprises a display panel;
the first polaroid is positioned on one side of the light-emitting surface of the display panel;
the light sensing element is positioned in the first display area and positioned on one side of the display panel, which is far away from the first polaroid;
the second polaroid is positioned in the first display area, is positioned between the display panel and the light sensing element along a first direction, and is perpendicular to the display panel along the first direction;
the light supplementing structure is positioned in the first display area and comprises a first light source and a compensation film, the first light source is positioned on one side, away from the display panel, of the second polarizer and is positioned on one side, facing the second display area, of the light sensing element; along the first direction, the compensation film is located between the display panel and the second polarizer, the extending direction of the transmission axis of the first polarizer is intersected with the extending direction of the transmission axis of the second polarizer, the compensation film changes the polarization state direction of part of light penetrating through the second polarizer, and the changed polarization state direction is parallel to the direction of the transmission axis of the first polarizer.
2. The display module of claim 1, wherein the compensation film is an O-plate type compensation film.
3. The display module of claim 1, wherein the transmittance of the first display area is greater than the transmittance of the second display area.
4. The display module of claim 1, wherein the compensation film has a retardation of 500nm to 1000nm.
5. The display module of claim 1, wherein the first polarizer has a transmission axis extending in a direction parallel to the first direction, and the second polarizer has a transmission axis extending in a direction parallel to the display panel.
6. The display module as claimed in claim 1, wherein the number of the light supplement structures is plural, and the plurality of light supplement structures are arranged around the light sensing element;
the direction of the central point of the compensation film of the light supplementing structure pointing to the central point of the light sensing element is a second direction, and the extending direction of the optical axis of the compensation film is perpendicular to the second direction.
7. The display module as claimed in claim 1, wherein the first light source is tilted toward the light-sensing element.
8. The display module according to claim 7, wherein the first light source comprises a light emitting chip, a first pin and a second pin are disposed on a side of the light emitting chip away from the display panel, the second pin is located on a side of the first pin away from the light sensing element, and a length of the second pin is greater than a length of the first pin along the first direction.
9. The display module of claim 7, wherein the first light source comprises a light emitting chip, a substrate is disposed on a side of the light emitting chip away from the display panel, and a height of the side of the substrate away from the light sensing element is greater than a height of the side of the substrate close to the light sensing element along the first direction.
10. The display module of claim 1, wherein a third polarizer is located in the second display region and on a side of the display panel away from the first polarizer, and a transmission axis of the third polarizer extends in a direction parallel to a transmission axis of the second polarizer.
11. The display module of claim 10, further comprising:
the light guide plate is positioned in the second display area and positioned on one side, far away from the display panel, of the third polarizer;
and the second light source is positioned on one side of the light guide plate, which is far away from the first display area.
12. The display module according to claim 10, further comprising:
and the second light source is positioned on one side of the third polaroid, which is far away from the display panel.
13. A display device comprising the display module according to any one of claims 1 to 12.
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| CN115793324B (en) | 2024-02-09 |
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