CN115793324B - Display module and display device - Google Patents
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- CN115793324B CN115793324B CN202211583172.7A CN202211583172A CN115793324B CN 115793324 B CN115793324 B CN 115793324B CN 202211583172 A CN202211583172 A CN 202211583172A CN 115793324 B CN115793324 B CN 115793324B
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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 at 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, wherein the first light source is positioned at one side of the second polaroid far away from the display panel; the compensation film is positioned between the display panel and the second polaroid. The first light source is used for supplying light, the compensation film changes the polarization state direction of partial oblique light transmitted through the second polaroid, so that the oblique light is transmitted through the first polaroid, converged towards the central area of the first display area, and the central area of the first display area is subjected to light supplying, so that the brightness of the central area of the first display area is effectively improved, and the display effect is improved.
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, the "high screen duty ratio" has become a research hotspot in the field of display technology, and people put forward the concept of "full screen", and "full screen" means that the front of the display screen is the screen, that is, there is no special space on the front of the display screen for setting devices such as front camera, earphone, etc., but the device is set up below the display screen, but the device can shelter from the light that backlight provided, resulting in the display screen and device corresponding area luminance not enough, even appear black area.
Therefore, a design capable of 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 for supplementing light to a first display area of a display panel.
In one aspect, the invention provides a display module, 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 at 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 at one side of the display panel away from the first polaroid;
the second polaroid is positioned in the first display area and positioned between the display panel and the light sensing element along a first direction, and the first direction is a direction perpendicular 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, wherein the first light source is positioned at one side of the second polaroid far away from the display panel and at one side of the light sensing element facing the second display area; along the first direction, the compensation film is located between the display panel and the second polarizer, the extension direction of the transmission axis of the first polarizer is intersected with the extension direction of the transmission axis of the second polarizer, the compensation film changes the polarization state direction of part of light transmitted through the second polarizer, 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 has the advantages that at least the following effects are realized:
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 at one side of the display panel far away from the first polaroid; the second polaroid is positioned in the first display area and positioned between the display panel and the light sensing element along a first direction, and the first direction is a direction perpendicular 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, wherein the first light source is positioned at one side of the second polaroid far away from the display panel and at one side of the light sensing element facing the second display area; along the first direction, the compensation film is positioned between the display panel and the second polaroid, the extension direction of the transmission axis of the first polaroid is intersected with the extension direction of the transmission axis of the second polaroid, the compensation film changes the polarization state direction of part of light transmitted through the second polaroid, and the changed polarization state direction is parallel to the transmission axis direction of the first polaroid. When the light provided by the first light source passes through the second polaroid, the light parallel to the extending direction of the transmission axis of the second polaroid is transmitted to the compensation film through the second polaroid, the compensation film changes the polarization state direction of the light partially transmitted through the second polaroid, the changed polarization state direction is parallel to the transmission axis direction of the first polaroid, namely, the light with the changed polarization state direction can be transmitted from the first polaroid to supplement light for the first display area, and the large-angle light lines in the light are converged towards the central area of the first display area, so that 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 of the first display area is uneven or black area is avoided, and the display effect is improved.
Of course, it is not necessary for any one product embodying the invention to achieve all of the technical effects described above at the same time.
Other features of the present invention and its advantages 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 diagram of a display module according to the present invention;
FIG. 2 is a cross-sectional view taken along the direction A-A' in FIG. 1;
fig. 3 is a graph of the phase retardation amount of the compensation film versus viewing angle brightness;
FIG. 4 is a view brightness map of a light supplementing structure;
FIG. 5 is another view luminance diagram of a light supplementing structure;
FIG. 6 is a view of yet another alternative embodiment of a light supplementing structure;
FIG. 7 is a view of yet another alternative embodiment of a light supplementing structure;
FIG. 8 is a view of yet another alternative embodiment of a light supplementing structure;
FIG. 9 is a view of yet another alternative embodiment of a light supplementing structure;
fig. 10 is a schematic diagram of another structure of a display module according to the present invention;
FIG. 11 is another cross-sectional view taken along line A-A' of FIG. 1;
FIG. 12 is a further cross-sectional view taken along line A-A' in FIG. 1;
FIG. 13 is a further cross-sectional view taken along line A-A' in FIG. 1;
fig. 14 is a schematic view of another structure of the display module provided by the present invention;
FIG. 15 is a cross-sectional view taken in the direction B-B' of FIG. 14;
FIG. 16 is a further cross-sectional view taken along line A-A' in 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, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to one 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 specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of a display module according to the present invention, and fig. 2 is a cross-sectional view taken along A-A' in fig. 1, to illustrate a specific embodiment of a display module 100 according to the present embodiment, 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;
a first polarizer 02 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 is positioned at one side of the display panel 01 away from the first polarizer 02;
the second polaroid 04 is positioned in the first display area DA1, and is positioned between the display panel 01 and the light sensing element 03 along a first direction X, wherein the first direction X is a direction perpendicular to the display panel 01;
the light supplementing structure 05 is positioned 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 positioned on one side of the second polaroid 04 away from the display panel 01 and 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 light transmission axis extending direction of the first polarizer 02 intersects with the light transmission axis extending direction of the second polarizer 04, the compensation film 07 changes the polarization state direction of a part of light transmitted through the second polarizer 04, and the changed polarization state direction is parallel to the direction of the light transmission axis of the first polarizer 02.
It should be noted that, in fig. 1, only the first display area DA1 is illustrated as being located in the central area of the display panel 01, that is, the second display area DA2 is disposed around the first display area DA1, and of course, the present invention is not limited thereto, and the first display area DA1 may also be located in an edge area of the display panel 01, that is, an outer edge of the first display area DA1 is only partially connected to the second display area DA2; in fig. 1, only the front projection of the first display area DA1 on the display panel 01 is illustrated as a circle, however, the front projection of the first display area DA1 on the display panel 01 may also be rectangular or have other shapes, and the shape of the front projection of the first display area DA1 on the display panel 01 may be adjusted according to actual requirements; the first light source 06 may be a light emitting diode, however, other types of light sources may be used for the first light source 06, which is not particularly limited in this embodiment, and the display panel 01 is preferably a liquid crystal display panel.
It can be understood that the first polarizer 02 is located at one side of the light-emitting surface of the display panel 01, i.e. 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 at a side of the second polarizer 04 away from the display panel 01, and the compensation film 07 is located between the display panel 01 and the second polarizer 04 along the first direction X, so that the first light source 06 and the compensation film 07 may overlap or not overlap along the first direction X, so that it is only required to ensure that part of light emitted by the first light source 06 can be emitted to the compensation film 07. The first light source 06 is arranged for supplementing light, the first light source 06 provides divergent light rays, the light rays emit to the second polaroid 04, the light rays with the polarization state direction parallel to the light transmission axis direction of the second polaroid 04 penetrate through the second polaroid 04, the light rays emitted to the compensation film 07 pass through the second polaroid 04, when the light rays pass through the compensation film 07, the polarization state of part of the light rays can be converted into the direction parallel to the transmission axis direction of the first polaroid 02 from the direction parallel to the transmission axis of the second polaroid 04, therefore, the light rays with the polarization state being changed can penetrate through the first polaroid 02, and in the part of the light rays penetrating through the first polaroid 02, large-angle light rays exist, the large-angle light rays emit 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, the condition that the central area of the first display area DA1 is black or the brightness is too low is avoided, 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 in this embodiment has at least 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; the first polaroid 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 and is located at a side of the display panel 01 away from the first polarizer 02; the second polarizer 04 is located in the first display area DA1, and along the 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 comprises a first light source 06 and a compensation film 07, wherein the first light source 06 is located at one side of the second polarizer 04 away from the display panel 01, and is located at 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 light transmission axis extending direction of the first polarizer 02 intersects with the light transmission axis extending direction of the second polarizer 04, the compensation film 07 changes the polarization state direction of a part of light transmitted through the second polarizer 04, and the changed polarization state direction is parallel to the direction of the light transmission axis of the first polarizer 02. When the light provided by the first light source 06 passes through the second polaroid 04, the light parallel to the extension direction of the transmission axis of the second polaroid 04 is transmitted to the compensation film 07 through the second polaroid 04, the compensation film 07 changes the polarization state direction of the light partially transmitted through the second polaroid 04, the changed polarization state direction is parallel to the transmission axis direction of the first polaroid 02, namely, the light with the changed polarization state direction can be transmitted from the first polaroid 02 to supplement light to the first display area DA1, and the large-angle light among the light is converged towards 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 uniformity of the light supplement of the first display area DA1 is realized, the condition that the brightness of the first display area DA1 is uneven or 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 the 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, when the light passes through the O-plate type compensation film 07, the polarization direction of the light with the transmission direction forming an acute angle with the plane of the display panel 01 changes, that is, the polarization direction of the oblique light changes, so that the polarization direction of the oblique light is parallel to the light transmission axis direction of the first polarizer 02; when the light beam having 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 beam having the transmission direction perpendicular to the plane of the display panel 01, so that the polarization state of the light beam having the transmission direction perpendicular to the plane of the display panel 01 is not changed, that is, the polarization state of the perpendicular light beam is not changed, and the polarization state of the perpendicular light beam is not parallel to the direction of the light transmission axis of the first polarizer 02. When the light transmitted through the compensation film 07 is transmitted to the first polarizer 02, the oblique light can transmit the first polarizer 02, and the vertical light can be absorbed by the first polarizer 02, so that the influence of the vertical light on the positive angle brightness is avoided, and part of the oblique light is transmitted to the central area of the first display area DA1 through the first polarizer 02, so that the brightness of the central area of the first display area DA1 is improved, the uniformity of light filling is realized, and the display effect is improved.
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 the light sensing element 03 is disposed on one side of the first display area DA1 away from the first polarizer 02, taking the light sensing element 03 as a camera, the first display area DA1 is used for displaying, and the camera can penetrate through the first display area DA1 to realize a shooting function, and the second display area DA2 is only required for displaying, so that the transmittance of the first display area DA1 is set to be greater than that of the second display area DA2, and the quantity of external light penetrating through the first display area DA1 can be increased when the camera shoots, thereby improving shooting effect.
In some alternative embodiments, referring to fig. 1, 2, 3, 4, 5, 6, 7, 8, and 9, fig. 3 is a graph of the phase retardation amount of the compensation film versus the viewing angle luminance, fig. 4 is a view luminance graph of the light supplementing structure, fig. 5 is another view luminance graph of the light supplementing structure, fig. 6 is yet another view luminance graph of the light supplementing structure, fig. 7 is yet another view luminance graph of the light supplementing structure, fig. 8 is yet another view luminance graph of the light supplementing structure, fig. 9 is yet another view luminance graph of the light supplementing structure, and the phase retardation amount of the compensation film 07 is 500nm to 1000nm.
It will be understood that, of course, only two light compensating structures 05 are shown in fig. 2, and it is not limited thereto, and reference is made to fig. 4 to 9, wherein fig. 5 is a view luminance map when the phase retardation of the compensation film 07 is 500nm, fig. 6 is a view luminance map when the phase retardation of the compensation film 07 is 600nm, fig. 7 is a view luminance map when the phase retardation of the compensation film 07 is 700nm, fig. 8 is a view luminance map when the phase retardation of the compensation film 07 is 800nm, fig. 9 is a view luminance map when the phase retardation of the compensation film 07 is 900nm, and it can be seen that the larger the phase retardation of the compensation film 07 is, the smaller the luminance area is, so that 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 Δn·d, wherein Δn is the absolute value of the liquid crystal ne-no, d is the optical path length, the angle required for compensating the center area of the first display area 1 can be calculated according to the actual demand, the phase retardation of the compensation film 07 is not limited to the actual retardation of 1000nm, and the light can be emitted from the compensation film 07 is accurately adjusted according to the actual retardation of 1000nm.
In some alternative embodiments, with continued reference to fig. 1 and 2, the direction of extension of the transmission axis of the first polarizer 02 is parallel to the first direction X, and the direction of extension of the transmission axis of the second polarizer 04 is parallel to the display panel 01.
It will be appreciated that the extending direction of the light transmission axis of the first polarizer 02 is parallel to the first direction X, the extending direction of the light transmission axis of the second polarizer 04 is parallel to the display panel 01, i.e. the extending direction of the light transmission axis of the first polarizer 02 is perpendicular to the extending direction of the light transmission axis of the second polarizer 04, the polarization direction of the light transmitted through the second polarizer 04 is parallel to the extending direction of the light transmission axis of the second polarizer 04, so that the polarization direction of the light is perpendicular to the extending direction of the light transmission axis of the first polarizer 02, the light is absorbed by the first polarizer 02 when being directed to the first polarizer 02, the compensation film 07 is located between the first polarizer 02 and the second polarizer 04 along the first direction X, the compensation film 07 compensates the light transmitted through the second polarizer 04, in particular, since 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 for compensating the brightness of the first display area DA 1; the O-plate type compensation film 07 does not compensate the vertical light, so that the polarization direction of the vertical light is not changed and is perpendicular to the extending direction of the transmission axis of the first polarizer 02, so that the vertical light cannot penetrate the first polarizer 02, and thus, the situation that the brightness of the position corresponding to the first light source 06 in the first display area DA1 is too high and the brightness of the central area of the first display area DA1 is too low to cause uneven brightness is avoided. Of course, the extending direction of the light transmission axis of the first polarizer 02 may be parallel to the display panel 01, and the extending direction of the light transmission axis of the second polarizer 04 may be parallel to the first direction X, which may be adjusted according to practical requirements, which is not limited in this embodiment.
In some alternative embodiments, referring to fig. 10, fig. 10 is a schematic structural diagram of another display module provided by the present invention, where the number of light supplementing structures 05 is plural, and the plural light supplementing structures 05 are arranged around the light sensing element 03;
the direction in which the center point of the compensation film 07 of the light supplementing structure 05 points to the center point of the light sensing element 03 is the second direction, and the extending direction of the optical axis of the compensation film 07 is perpendicular to the second direction.
It should be understood that the number of the light compensating structures 05 is only 4 in fig. 10, and the present invention is not limited thereto, and the number of the light compensating structures 05 may be 6, 8, or the like. The plurality of light supplementing structures 05 are arranged around the central array of the light sensing element 03, the light emergent direction of the O-plate type compensation film 07 is related to the direction of the optical axis of the O-plate type compensation film, and the extending direction of the optical axis of the compensation film 07 is perpendicular to the second direction, so that oblique light rays can be ensured to irradiate to the central area of the first display area DA1, uniform light supplementing of the first display area DA1 is facilitated, and the display effect is improved.
In some alternative embodiments, referring to fig. 1 and 11, fig. 11 is another cross-sectional view taken along line A-A' in fig. 1, with the first light source 06 tilted toward the light sensing element 03.
It can be understood that the light emitted by the first light source 06 is divergent, wherein the most light is transmitted along the direction perpendicular to the plane where the compensation film 07 is located, but the compensation film 07 does not compensate the polarization 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 light obliquely incident into the compensation film 07 is limited; the first light source 06 is arranged to incline towards the light sensing element 03, so that most light rays emitted by the first light source 06 are obliquely emitted into the compensation film 07, the compensation film 07 can compensate inclined light rays, thereby improving the light utilization rate, effectively improving the brightness of the central area of the first display area DA1, realizing uniform light filling and improving the display effect.
In some alternative embodiments, with continued reference to fig. 1 and 11, the first light source 06 includes a light emitting chip 08, a first lead 09 and a second lead 10 are disposed on a side of the light emitting chip 08 away from the display panel 01, the second lead 10 is located on a side of the first lead 09 away from the light sensing element 03, and a length of the second lead 10 is greater than a length of the first lead 09 along the first direction X.
It can be understood that, the second pin 10 is located at a side of the first pin 09 away from the light sensing element 03, and in the first direction X, the length of the second pin 10 is greater than that of the first pin 09, and the light emitting chips 08 supported by the first pin 09 and the second pin 10 are inclined toward the light sensing element 03, so that the light incident into the compensation film 07 is increased, and the light supplementing effect on the central area of the first display area DA1 is improved, and in the first direction X, the length difference between the first pin 09 and the second pin 10 can be adjusted according to the light angle that needs to be emitted.
In some alternative embodiments, referring to fig. 1 and 12, fig. 12 is a further cross-sectional view taken along the direction A-A' in fig. 1, the first light source 06 comprises a light emitting chip 08, the side of the light emitting chip 08 remote from the display panel 01 is provided with a substrate 11, and the height of the side of the substrate 11 remote from the light sensing element 03 is greater than the height of the side of the substrate 11 close to the light sensing element 03 in the first direction X.
It will be understood that, for convenience of illustration, the substrate 11 is not filled with a pattern, and in fig. 12, in the first direction X, the height of the side of the substrate 11 away from the light sensing element 03 is greater than the height of the side of the substrate 11 close to the light sensing element 03, so that the side of the substrate 11 close to the second polarizer 04 is inclined towards 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 accordingly, so that the light incident on the compensation film 07 is increased, which helps to improve the light supplementing effect on the central area of the first display area DA1, and the height of the side of the substrate 11 away from the light sensing element 03 and the height of the side of the substrate 11 close to the light sensing element 03 can be adjusted according to the angle of the light emergent light, i.e. the inclination angle of the side of the substrate 11 close to the second polarizer 04 is adjusted, so that the inclination angle of the light emitting chip 08 above the substrate 11 is adjusted.
In some alternative embodiments, with continued 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, an encapsulation layer 12 is disposed on a side of the light emitting chip 08 away from the substrate 11, and if the substrate 11 is not tilted or the light emitting chip 08 is tilted, the vertical light emitted by the first light source 06 can be deflected by the encapsulation layer 12 to be deflected into a tilted light, so as to improve the light utilization rate.
In some alternative embodiments, referring to fig. 1 and 13, fig. 13 is a cross-sectional view taken along the direction A-A' in fig. 1, and the display module 100 provided in this embodiment further includes a third polarizer 13 located in the second display area DA2 and located on a side of the display panel 01 away from the first polarizer 02, where an extension direction of a transmission axis of the third polarizer 13 is parallel to an extension direction of a transmission axis of the second polarizer 04.
It can be understood that two polarizers are required for the lcd panel 01 to be respectively attached to two sides of the lcd panel 01 to display a picture, so that the first polarizer 02 is located on one side of the lcd panel 01, the second polarizer 04 and the third polarizer 13 are located on one side of the lcd 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 front surface of the first polarizer 02 covers one side of the lcd panel 01, which can facilitate manufacturing and save resources.
In some alternative embodiments, referring to fig. 14 and 15, fig. 14 is a schematic view of still another structure of a display module provided in the present invention, and fig. 15 is a cross-sectional view of fig. 14 along direction B-B', where the display module 100 provided in this embodiment further includes:
the light guide plate 14 is positioned in the second display area DA2 and is positioned at one side of the third polarizer 13 away from the display panel 01;
the second light source 15 is located 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 adopts a side-in backlight, light is provided by the second light source 15 and is incident into the light guide plate 14, and a portion of the light is incident into the second polarizer 04 through the light guide plate 14 to supplement the light of the first display area DA1, and of course, a portion of the light provided by the first light source 06 is also incident into the light guide plate 14 for displaying the second display area DA 2.
In some alternative embodiments, referring to fig. 1 and 16, fig. 16 is a further cross-sectional view taken along A-A' in fig. 1, and the display module 100 provided in this embodiment further includes:
the second light source 15 is located at 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 the light supplement of 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 present embodiment includes a display module 100 according to the above 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, but it is to 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, which is not particularly limited in the present invention. 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 the specific description of the display module 100 in the above embodiments may be referred to in the embodiments, which is not repeated herein.
According to the embodiment, the display module provided by the invention 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 at one side of the display panel far away from the first polaroid; the second polaroid is positioned in the first display area and positioned between the display panel and the light sensing element along a first direction, and the first direction is a direction perpendicular 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, wherein the first light source is positioned at one side of the second polaroid far away from the display panel and at one side of the light sensing element facing the second display area; along the first direction, the compensation film is positioned between the display panel and the second polaroid, the extension direction of the transmission axis of the first polaroid is intersected with the extension direction of the transmission axis of the second polaroid, the compensation film changes the polarization state direction of part of light transmitted through the second polaroid, and the changed polarization state direction is parallel to the transmission axis direction of the first polaroid. When the light provided by the first light source passes through the second polaroid, the light parallel to the extending direction of the transmission axis of the second polaroid is transmitted to the compensation film through the second polaroid, the compensation film changes the polarization state direction of the light partially transmitted through the second polaroid, the changed polarization state direction is parallel to the transmission axis direction of the first polaroid, namely, the light with the changed polarization state direction can be transmitted from the first polaroid to supplement light for the first display area, and the large-angle light lines in the light are converged towards the central area of the first display area, so that 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 of the first display area is uneven or black area is avoided, and the display effect is improved.
While certain specific embodiments of the invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the 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 (12)
1. A display module 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 at 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 at one side of the display panel away from the first polaroid;
the second polaroid is positioned in the first display area and positioned between the display panel and the light sensing element along a first direction, and the first direction is a direction perpendicular 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, wherein the first light source is positioned at one side of the second polaroid far away from the display panel and at one side of the light sensing element facing the second display area; the compensation film is positioned between the display panel and the second polaroid along the first direction, the extension direction of the transmission axis of the first polaroid is intersected with the extension direction of the transmission axis of the second polaroid, the polarization state direction of light obliquely incident to 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 polarization state direction of the light vertically incident to the second polarizer is not changed;
the compensation film is an O-plate type compensation film;
the direction that the central point of the compensation film of the light supplementing structure points 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.
2. The display module of claim 1, wherein the transmittance of the first display area is greater than the transmittance of the second display area.
3. The display module of claim 1, wherein the compensation film has a phase retardation of 500nm to 1000nm.
4. The display module of claim 1, wherein the direction of extension of the light transmission axis of the first polarizer is perpendicular to the direction of extension of the light transmission axis of the second polarizer, and the direction of extension of the light transmission axis of the second polarizer is parallel to the display panel.
5. The display module of claim 1, wherein the number of light supplementing structures is a plurality, and the plurality of light supplementing structures are arranged around the light sensing element.
6. The display module of claim 1, wherein the first light source is tilted toward the light sensing element.
7. The display module of claim 6, 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 disposed 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.
8. The display module of claim 6, 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 a side of the substrate away from the light sensing element is greater than a height of a side of the substrate close to the light sensing element along the first direction.
9. The display module of claim 1, wherein a third polarizer is located in the second display area and is located at a side of the display panel away from the first polarizer, and an extension direction of a light transmission axis of the third polarizer is parallel to an extension direction of a light transmission axis of the second polarizer.
10. The display module assembly of claim 9, further comprising:
the light guide plate is positioned in the second display area and is positioned at one side of the third polaroid far away from the display panel;
the second light source is positioned at one side of the light guide plate far away from the first display area.
11. The display module assembly of claim 9, further comprising:
and the second light source is positioned at one side of the third polaroid far away from the display panel.
12. A display device comprising the display module of any one of claims 1-11.
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| CN115793324A (en) | 2023-03-14 |
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