Display module and display device

A display module includes a display panel, a flexible circuit board, a driving control chip, a touch control chip and a protective structure. The flexible circuit board is bonded to the display panel. The driving control chip is located on the display panel or the flexible circuit board. The touch control chip is located on the flexible circuit board or the display panel. The protective structure covers the driving control chip and/or the touch control chip. And the protective structure includes a first insulating layer, a heat dissipation layer and an electromagnetic shielding layer that are sequentially disposed away from the display panel.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese Patent Application No. 202022362167.6, filed on Oct. 21, 2020, which is incorporated herein by reference in its entirety.

TECHNICAL FIELD

The present disclosure relates to the field of display technologies, and in particular, to a display module and a display device.

BACKGROUND

An organic light-emitting diode (OLED) has advantages of self-luminescence, low energy consumption, lightness and thinness, high color saturation, etc., and may be manufactured into a flexible display device based on a flexible material. The OLED is widely applied to various electronic devices including a computer, a mobile phone and the like.

SUMMARY

In an aspect, a display module is provided. The display module includes a display panel, a flexible circuit board, a driving control chip, a touch control chip and a protective structure. The flexible circuit board is bonded to the display panel. The driving control chip is located on the display panel or the flexible circuit board. The touch control chip is located on the flexible circuit board or the display panel. The protective structure covers the driving control chip and/or the touch control chip. And the protective structure includes a first insulating layer, a heat dissipation layer and an electromagnetic shielding layer that are sequentially disposed away from the display panel.

In some embodiments, the protective structure further includes: a wave-absorbing material layer located between the first insulating layer and the heat dissipation layer, the wave-absorbing material layer at least covering the driving control chip and/or the touch control chip; and a second insulating layer located between the wave-absorbing material layer and the heat dissipation layer.

In some embodiments, an edge of the second insulating layer is connected to an edge of the first insulating layer, so that the wave-absorbing material layer is sealed between the first insulating layer and the second insulating layer.

In some embodiments, the flexible circuit board includes a first conductive portion, and the electromagnetic shielding layer is electrically connected to the first conductive portion so that the electromagnetic shielding layer is grounded.

In some embodiments, the electromagnetic shielding layer is electrically connected to the first conductive portion through a first conductive adhesive, so that the electromagnetic shielding layer is grounded.

In some embodiments, the protective structure includes a whole protective structure covering the driving control chip and the touch control chip.

In some embodiments, the whole protective structure further covers circuits located between the driving control chip and the touch control chip.

In some embodiments, the protective structure includes two protective sub-structures, one protective sub-structure covers the driving control chip, and another protective sub-structure covers the touch control chip.

In some embodiments, the two protective sub-structures share the first insulating layer and the electromagnetic shielding layer.

In some embodiments, the display panel is a flexible display panel, the flexible display panel includes a display region and a peripheral region connected to at least one side of the display region. The peripheral region is bent to a non-display side of the display region. The flexible circuit board is located on the non-display side of the display region, and bonded to the peripheral region. The touch control chip is located on a surface of the flexible circuit board away from the display region. The driving control chip is located on a surface of the peripheral region away from the display region.

In some embodiments, the display module further includes at least one connecting portion located between the display region and the flexible circuit board. The at least one connecting portion is configured to fix the flexible circuit board on the display region.

In some embodiments, the display module further includes a protective backing plate located between the display region and the peripheral region.

In some embodiments, the display module further includes an electrostatic protective layer located on the non-display side of the display panel. The flexible circuit board further includes a second conductive portion. The electrostatic protective layer is electrically connected to the second conductive portion so that the electrostatic protective layer is grounded. The at least one connecting portion is located on a side of the electrostatic protective layer away from the display panel. The second conductive portion is located on a periphery of the at least one connecting portion.

In some embodiments, the electrostatic protective layer is electrically connected to the second conductive portion through a second conductive adhesive, so that the electrostatic protective layer is grounded.

In some embodiments, the electrostatic protective layer includes a mesh adhesive layer, a foam layer and a copper layer that are sequentially disposed away from the display panel. The copper layer is electrically connected to the second conductive portion.

In some embodiments, the heat dissipation layer includes a nano-carbon layer, and/or the electromagnetic shielding layer includes a copper foil layer.

In some embodiments, the wave-absorbing material layer includes ferrite or a magnetic iron nanomaterial.

In another aspect, a display device is provided. The display device includes the display module as described in the above, and a protective cover plate disposed on a display side of the display module.

DETAILED DESCRIPTION

The use of “adapted to” or “configured to” herein implies an open and inclusive expression that does not exclude devices adapted to or configured to perform additional tasks or steps.

The term “about”, “substantially” and “approximately” as used herein includes a stated value and an average value within an acceptable range of deviation of a particular value determined by a person of ordinary skill in the art, considering measurement in question and errors associated with measurement of a particular quantity (i.e., limitations of a measurement system).

Exemplary embodiments are described herein with reference to sectional views and/or plan views that are schematic illustrations of idealized embodiments. In the drawings, thicknesses of layers and regions may be enlarged for clarity. Therefore, variations in a shape with respect to the drawings due to, for example, manufacturing technology and/or tolerances may be envisaged, Therefore, exemplary embodiments should not be construed as being limited to the shapes of the regions as illustrated herein, but include deviations in shapes due to, for example, manufacturing. For example, an etched region shown as a rectangle will generally have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to show the actual shapes of the regions of the device, and are not intended to limit the scope of the exemplary embodiments.

Some embodiments of the present disclosure provide a display device3000. As shown inFIG.8, the display device3000includes a display module1000and a protective cover plate2000, and the protective cover plate2000is located on a display side of the display module1000. The protective cover plate2000is configured to protect the display module1000, so as to prevent the display module1000from failing to normally display due to the display device3000being scratched or squeezed.

The display device3000may be any component having a display function, such as a watch, a tablet computer, a notebook computer, a display, a television, a billboard, a digital photo frame, a printer, a telephone, a mobile phone, a personal digital assistant (FDA), a digital camera, a camcorder, a viewfinder, a navigator, a household appliance, and an information search device (e.g., a business search device of a department of, such as, an electronic government, a bank, a hospital, an electric power, or a post office).

As shown inFIG.1, the display module1000includes a display panel1. The display panel1is used for displaying an image, and may be an organic light emitting diode (OLED) display panel. As shown inFIG.9A, the display panel1includes a display region11and a peripheral region12located on at least one side of the display region11, The display region11includes a plurality of sub-pixels P defined by gate lines GL and data lines DL. For convenience of description, a description will be made below by taking an example in which the plurality of sub-pixels P are arranged in a matrix. Sub-pixels P arranged in a row in a horizontal direction X are referred to as a same row of sub-pixels, and sub-pixels P arranged in a row in the vertical direction Y are referred to as a same column of sub-pixels. Each sub-pixel P includes a pixel circuit100and a light emitting device M electrically connected to the pixel circuit100. The pixel circuit100is able to drive the light emitting device M electrically connected thereto to emit light.

As shown inFIG.8, the display module1000further includes at least one driving control chip2and a flexible circuit board3. The number of driving control chips is not limited in some embodiments of the present disclosure, and it may be one, two, three or more.

The flexible circuit board3is bonded to the peripheral region12of the display panel1. The driving control chip2is disposed in the peripheral region12or on the flexible circuit board3, electrically connected to the pixel circuit100, and configured to provide a driving signal to the pixel circuit100. The driving control chip2is disposed in the peripheral region12, which makes a distance between the driving control chip2and the pixel circuit100short, thereby reducing a loss of a signal transmitted between the driving control chip2and the pixel circuit100in a transmission process. It is conducive to ensure a normal display of the display module1000.

For example, as shown inFIG.9A, the display module1000includes two driving control chips2, i.e., a gate driving circuit200and a source driving circuit300. The gate driving circuit200and the source driving circuit300are disposed in the peripheral region12of the display panel1.FIG.9Aillustrates the gate driving circuit200located on a left side of the display region11, and the source driving circuit300located on a lower side of the display region11. The gate driving circuit200is configured to provide gate driving signals for progressive scanning to the gate lines GL. The source driving circuit300is configured to provide data signals to the data lines DL, and provide a voltage signal to common power lines VDD. In this way, the pixel circuit100drives the light emitting device M electrically connected thereto to emit light under action of the gate driving signals, the data signals and the voltage signal.

As shown inFIGS.9B and9C, the display panel1includes a display substrate101having a plurality of pattern layers stacked, an encapsulation layer102, and a touch structure103. The encapsulation layer102is used to prevent moisture and oxygen from entering the display substrate101, thereby preventing a poor display and other phenomena.

As shown inFIG.9B, the touch structure103is directly disposed on the encapsulation layer102, i.e., no other film layer is disposed between the touch structure103and the encapsulation layer102. In some other embodiments, as shown inFIG.9C, the touch structure103is disposed on a substrate104, and the substrate104is attached to the encapsulation layer102through an optical adhesive105. A material of the substrate104may be, for example, polyethylene terephthalate (PET), polyimide (PI), cyclic olefin polymer (COP).

The display substrate101includes a base1011. The gate lines GL, the data lines DL, the common power lines VDD, the pixel circuits100, the light emitting devices M, the gate driving circuit200and the source driving circuit300are all disposed on the base1011.

The base1011may be a flexible base. The flexible base1011may be made of one or more of polyimide (PI), polyethylene terephthalate (PET), polyethylene naphthalate two formic acid glycol ester (PEN), and the like.

The gate lines GL are insulated from and intersect with the data lines DL, and the common power lines VDD may be parallel to the data lines DL.

As shown inFIGS.9A to9C, the pixel circuit100includes at least one thin film transistor TFT and at least one capacitor C. Each thin film transistor TFT may have a top-gate or bottom-gate structure. As shown inFIG.9B, the thin film transistor TFT having the top-gate structure includes an active layer AL, a gate insulating layer GI, a gate metal pattern layer GM (which is used for forming a gate1012), an interlayer dielectric layer ILD and a source-drain metal pattern layer SD (which is used for forming a source electrode1013and a drain1014) that are disposed on a side of the base1011. In some other embodiments, as shown inFIG.9C, the thin film transistor TFT having the bottom-gate structure includes a gate metal pattern layer GM (which is used for forming a gate1012), a gate insulating layer GI, an active layer AL, and a source-drain metal pattern layer SD (which is used for forming a source electrode1013and a drain1014) that are disposed on a side of the base1011.

There are various types of thin film transistors TFTs. For example, the thin film transistor TFT may be an N-type thin film transistor or a P-type thin film transistor, and their difference only lies in a turn-on condition. The N-type thin film transistor is turned on at a high level, and turned off at a low level. The P-type thin film transistor is turned on at the low level, and turned off at the high level. The active layer AL of the thin film transistor TFT may be composed of amorphous silicon, single crystal silicon, polycrystalline silicon, or an oxide semiconductor. The active layer AL includes a channel region not doped with an impurity, and a source region and a drain region that are formed by doping an impurity on both sides of the channel region. The impurity to be doped varies with the type of the thin film transistor TFT, and may be an N-type impurity or a P-type impurity.

The capacitor C includes a first electrode plate and a second electrode plate, and an interlayer insulating film as a dielectric is disposed between the two electrode plates.

FIG.9Dillustrates an electrical connection relationships inside and outside the pixel circuit by taking an example in which the pixel circuit100with a 2T1C structure includes two thin film transistors TFT (i.e., a switching thin film transistor T1and a driving thin film transistor T2) and one capacitor C.FIGS.9B and9Conly show structures and connection relationships of the driving thin film transistor (such as structures in the dash lines ofFIGS.9B and90) and the light emitting device M. However, a structure of the switching transistor and its connection relationship with other components may be well determined by those skilled in the art according to the context.

As shown inFIG.9D, a gate1012of the switching thin film transistor T1is connected to the gate line GL, a source1013of the switching thin film transistor T1is connected to the data line DL, and a drain1014of the switching thin film transistor T1is connected to a gate1012of the driving thin film transistor T2. A source1013of the driving thin film transistor T2is connected to the common power line VDD, and a drain1014of the driving thin film transistor T2is connected to a first electrode1015of the light emitting device M through a via hole. The first electrode plate of the capacitor C is connected to the gate1012of the driving thin film transistor T2, and the second electrode plate of the capacitor C is connected to the source1013of the driving thin film transistor T2.

The switching thin film transistor T1is turned on by a gate voltage applied to the gate line GL, thereby transmitting a data voltage applied to the data line DL to the driving thin film transistor T2. There is a certain difference between a data voltage transmitted from the switching thin film transistor T1to the driving thin film transistor T2and a common voltage applied from the common power line VDD to the driving thin film transistor T2. A voltage corresponding to an absolute value of the difference is stored in the capacitor C. A current corresponding to the voltage stored in the capacitor C flows into the light emitting device M through the driving thin film transistor T2, so that the light emitting device M emits light.

In addition, as shown inFIGS.9B and9C, the light emitting device M includes a first electrode1015, a light emitting functional layer1016and a second electrode1017. One of the first electrode1015and the second electrode1017is an anode (which is used for supplying holes), and another is a cathode (which is used for supplying electrons). The first electrode1015and the second electrode1017inject holes and electrons into the light emitting functional layer1016. When an exciton generated by a combination of the hole and the electron transitions from an excited state to a ground state, light is formed.

The first electrode1015may be formed of a metal with high reflectivity, and the second electrode1017may be formed of a transparent conductive film. In this case, light from the light emitting functional layer1016is reflected by the first electrode1015, and directed to the outside through the second electrode1017, thereby forming a top-emission type light emitting device. However, embodiments of the present disclosure are not limited thereto. In a case where the first electrode1015is formed of the transparent conductive film and the second electrode1017is formed of the metal with the high reflectivity, a bottom-emission type light emitting device may be formed. Of course, in a case where both the first electrode1015and the second electrode1016are formed of the transparent conductive film, a dual-side-emission type light emitting device may be formed.

A material of the transparent conductive film may be, for example, metal oxide such as indium tin oxide (ITO), indium zinc oxide (CO), or indium gallium zinc oxide (IGZO). The metal with the high reflectance may be, for example, an alloy such as magnesium aluminum alloy (MgAl) or lithium aluminum alloy (LiAl), or a metal element such as magnesium (Mg), aluminum (Al), lithium (Li), or silver (Ag).

In some embodiments, as shown inFIGS.9B and9C, the light emitting functional layer1016may include a light emitting layer10161. In some other embodiments, the light emitting function layer1016may include at least one of a hole injection layer (HIL), a hole transport layer (HTL), an electron transport layer (ETL) or an electron injection layer (EIL) (not shown inFIGS.9B and90) in addition to the light emitting layer10161. In a case where the light emitting functional layer1016includes all of the above layers, the HIL, the HTL, the light emitting layer10161, the ETL and the EIL are sequentially stacked on the first electrode1015as the anode.

As shown inFIGS.9B and9C, the display substrate101may further include a planarization layer1018disposed between the thin film transistor TFT and the first electrode1015, and a pixel defining layer1019disposed on a side of the planarization layer1018away from the base1011. The pixel defining layer1019includes a plurality of opening regions, and barrier walls disposed around the opening regions, A light emitting device M is disposed in an opening region. First electrodes1015and light emitting layers10161of adjacent light emitting devices M are separated by a barrier wall of a pixel defining layer1019. Second electrodes1017of the light emitting devices M are connected as a whole, that is, the second electrodes1017are a whole layer. The HIL, the HTL, the ETL, the EIL, and the like in the light emitting functional layer1016may be separated by barrier walls of the pixel defining layer1019, or may be whole layers. A material of the pixel defining layer1019is, for example, black polyimide, which is able to absorb light that is emitted by one light emitting device M and directed to another adjacent light emitting device M so as to prevent light mixing between two adjacent sub-pixels.

The encapsulation layer102may be an encapsulation film. The number of layers of the encapsulation films included in the encapsulation layer102is not limited. In some embodiments, the encapsulation layer102may include one layer of encapsulation film, or may include two or more layers of encapsulation films that are stacked. For example, the encapsulation layer102includes three layers of encapsulation films that are sequentially stacked.

In a case where the encapsulation layer102includes the three layers of encapsulation films that are sequentially stacked, a material of the encapsulation film located in a middle layer is an organic material, and materials of the encapsulation films located on both sides are an inorganic material. The organic material may be, for example, polymethyl methacrylate (PMMA). The inorganic material may be one or more of silicon nitride (SiNx), silicon oxide (SiOx), or silicon oxynitride (SiOxNy).

As shown inFIG.8, the display module1000further includes a touch control chip4. The touch control chip4is disposed on the flexible circuit board3or the peripheral region12of the display panel1. The touch control chip4is electrically connected to a touch structure103, and configured to provide a driving signal to the touch structure103.

In some embodiments, as shown inFIG.5, the peripheral region12is bent to a non-display side of the display region11. On this basis, the flexible circuit board3is located on the non-display side of the display region11, the driving control chip2is located on a surface of the peripheral region12away from the display region11, and the touch control chip4is located on a surface of the flexible circuit board3away from the display region11. The peripheral region12is bent to the non-display side of the display region11to reduce a width of a bezel of the display device3000including the display panel1, so that the display device3000may realize a narrow bezel design.

The display module1000further includes a protective structure5. The protective structure5covers the driving control chip2and/or the touch control chip4. The protective structure5includes a first insulating layer51, a heat dissipation layer52and an electromagnetic shielding layer53that are sequentially disposed away from the driving control chip2and/or the touch control chip4. For example, the protective structure5may cover only the driving control chip2, only the touch control chip4, or both the driving control chip2and the touch control chip4(as shown inFIG.1).

It will be noted that, in some embodiments of the present disclosure, the protective structure5may cover not only the driving control chip2and the touch control chip4, but also the flexible circuit board3and other circuits around the driving control chip2and the touch control chip4on the display panel1, so as to protect the other circuits around the driving control chip2and the touch control chip4.

The first insulating layer51has an insulating property. Therefore, the first insulating layer51is able to protect the driving control chip2and/or the touch control chip4that are covered by the first insulating layer51from static electricity, so as to prevent the driving control chip2and/or the touch control chip4from being interfered by the static electricity.

For example, the first insulating layer51may be an adhesive layer with adhesiveness. The first insulating layer51is disposed between the driving control chip2and/or the touch control chip4, and the heat dissipation layer52. As a result, the heat dissipation layer52can be bonded to the surfaces of the driving control chip2and/or the touch control chip4away from the display panel1, and the heat dissipation layer52can be insulated from the driving control chip2and the touch control chip4.

For example, the heat dissipation layer52may include a nanocarbon layer. That is, a material of the heat dissipation layer52may include nanocarbon. The nanocarbon has an excellent heat conduction performance, and thus may quickly conduct heat away from a region where the driving control chip2and/or the touch control chip4are located.

For example, the electromagnetic shielding layer53may include a copper foil layer. That is, a material of the electromagnetic shielding layer53may include copper foil. The copper foil has excellent interlayer heat conduction performance, and thus may quickly absorb and dissipate the heat conducted by the heat dissipation layer52. Moreover, since cost of the copper foil is lower, cost of the protective structure5may be reduced by using the copper foil.

It will be understood that, since both the nanocarbon layer and the copper foil layer are conductive layers, the nanocarbon layer can also reflect electromagnetic waves. As a result, the ability of the protective structure5to electromagnetically shield the driving control chip2and/or the touch control chip4may be improved.

In some embodiments of the present disclosure, the protective structure5covering the driving control chip2and/or the touch control chip4are provided with a multi-layer structure that is composed of the first insulating layer51, the heat dissipation layer52and the electromagnetic shielding layer53. Therefore, the protective structure5has a good heat dissipation effect. When power and heat of the driving control chip2and/or the touch control chip4increase, the protective structure5dissipates heat well in a region of the display module1000where the driving control chip2and/or the touch control chip4are disposed by using the heat dissipation layer52. As a result, a situation that the display device3000including the display module1000cannot be used normally due to excessively high temperature of the region where the driving control chip2and/or the touch control chip4are disposed may be avoided.

In some embodiments, as shown inFIG.2, the protective structure5further includes a wave-absorbing material layer54and a second insulating layer55. The wave-absorbing material layer54and the second insulating layer55at least cover the driving control chip2and/or the touch control chip4. The wave-absorbing material layer54is located between the first insulating layer51and the heat dissipation layer52, and the second insulating layer55is located between the wave-absorbing material layer54and the heat dissipation layer52.

With such an arrangement, when the power of the driving control chip2increases and the number of electromagnetic waves emitted by the driving control chip2increases, the wave-absorbing material layer54may absorb the electromagnetic waves emitted by the driving control chip2. As a result, the electromagnetic waves emitted by the driving control chip2is prevented from affecting circuits (e.g., a circuit on the flexible circuit board3) at other positions of the display device3000.

Similarly, when the power of the touch control chip4increases and the number of electromagnetic waves emitted by the touch control chip4increases, the wave-absorbing material layer54may also absorb the electromagnetic waves emitted by the touch control chip4that is covered by the wave-absorbing material layer54. As a result, the electromagnetic waves emitted by the touch control chip4is prevented from affecting a circuit (for example, a circuit on the display panel1or a circuit on the flexible circuit board3) around the touch control chip4.

The second insulating layer55has an insulating property. Therefore, the second insulating layer55is also able to protect the driving control chip2and/or the touch control chip4that are covered by the second insulating layer55from static electricity, so as to prevent the driving control chip2and/or the touch control chip4from being interfered by the static electricity.

For example, the second insulating layer55may be an adhesive layer with adhesiveness. The second insulating layer55is disposed between the wave-absorbing material layer54and the heat dissipation layer52. As a result, the heat dissipation layer52can be bonded to a surface of the wave-absorbing material layer54away from the first insulating layer51, and the wave-absorbing material layer54can be insulated from the heat dissipation layer52.

For example, a material of the wave-absorbing material layer54may include ferrite or magnetic iron nanomaterial.

It will be noted that, in a case where the wave-absorbing material layer54covers both the driving control chip2and the touch control chip4, the wave-absorbing material layer54may be a whole layer. In this case, the wave-absorbing material layer54may also cover other circuits around the driving control chip2and the touch control chip4.

In a case where the wave-absorbing material layer54covers both the driving control chip2and the touch control chip4, the wave-absorbing material layer54may includes two wave-absorbing material sub-layers541and542. As shown inFIG.2, one wave-absorbing material sub-layer541covers the driving control chip2, and another wave-absorbing material sub-layer542covers the touch control chip4. In this case, the wave-absorbing material layer54may no longer cover the other circuits around the driving control chip2and the touch control chip4, so as to reduce an area of the wave-absorbing material layer54and reduce manufacturing cost of the protective structure5.

In some embodiments, as shown inFIG.2, an edge of the second insulating layer55is connected to an edge of the first insulating layer51, so that the wave-absorbing material layer54is sealed between the first insulating layer51and the second insulating layer55. With such an arrangement, particles generated by the wave-absorbing material layer54may be prevented from entering other regions of display module1000. In this way, the particles generated by the wave-absorbing material layer54are prevented from damaging structures of the other regions of display module1000, and short circuit is prevented from occurring in part of the circuits due to the particles generated by the wave-absorbing material layer54entering a circuit structure region.

In some embodiments, as shown inFIG.2, the flexible circuit board3includes a first conductive portion31. The electromagnetic shielding layer53is electrically connected to the first conductive portion31, so that the electromagnetic shielding layer53is grounded.

For example, the electromagnetic shielding layer53may be connected to the first conductive portion31through a first conductive adhesive81, so that the electromagnetic shielding layer53is grounded. The electromagnetic shielding layer53is connected to the first conductive portion31, and thus connected to a ground terminal of the flexible circuit board3, thereby improving an antistatic capability of the display module1000.

In some embodiments, as shown inFIGS.1and2, the protective structure5may cover both the driving control chip2and the touch control chip4. Therefore, the protective structure5may be directly manufactured on the driving control chip2and the touch control chip4, and a manufacturing process of the protective structure5is simple and is easy to operate.

In some other embodiments, as shown inFIG.3, the protective structure5includes two protective sub-structures501and502. One protective sub-structure501covers the driving control chip2, and another protective sub-structure502covers the touch control chip4. In this way, an area covered by the protective structure5is small, thereby reducing manufacturing cost of the protective structure5and the display module1000.

In yet some other embodiments, as shown inFIG.4, in a case where the protective structure5includes two protective sub-structures501and502, the two protective sub-structures501and502may share one electromagnetic shielding layer53and one first insulating layer51. That is, the first insulating layer51and the electromagnetic shielding layer52may cover the driving control chip2and the touch control chip4, and other circuit structures that are located between the driving control chip2and the touch control chip4. In this way, the electromagnetic shielding layer53and the first insulating layer51may also provide electromagnetic shielding protection for the other circuit structures between the driving control chip2and the touch control chip4.

In some embodiments, as shown inFIG.5, the display module1000further includes at least one connecting portion9. The connecting portion9is located between the display region11and the flexible circuit board3, and configured to fix the flexible circuit board3on the display region11. The flexible circuit board3is fixed on the display region11of the display panel1, so as to prevent a position of the flexible circuit board3from moving during operation of the display module1000, and thus prevent the circuit structure on the flexible circuit board3from being damaged. In this way, the normal display of the display module1000may be ensured.

In some embodiments, as shown inFIG.5, the display module1000further includes a protective backing plate6, and the protective backing plate6is located between the display region11and the peripheral region12. With such a design, the protective backing plate6may support the peripheral region12that is bent to the non-display side of the display region11, thereby preventing damage to components and film layer breakage in the display panel1caused by excessive bending of the peripheral region12.

In some embodiments, as shown inFIG.6, the display module1000further includes an electrostatic protective layer7, and the electrostatic protective layer7is located on a back surface (a non-display side) of the display panel1. The flexible circuit board3further includes a second conductive portion32. The electrostatic protective layer7is electrically connected to the second conductive portion32, so that the electrostatic protective layer7is grounded.

For example, as shown inFIG.7, the electrostatic protective layer7may include a mesh adhesive layer71, a foam layer72and a copper layer73that are located on the back surface of the display panel1and are sequentially away from the display panel1. The electrostatic protective layer7may dissipate heat of the display panel1, and it is conducive to remove static electricity on the display panel1.

The electrostatic protective layer7is electrically connected to the second conductive portion32. The copper layer73in the electrostatic protective layer7may be electrically connected to the second conductive portion32of the flexible circuit board3, so that the copper layer73in the electrostatic protective layer7is connected to the ground terminal of the flexible circuit board3. Therefore, the antistatic capability of the overall display module100may be improved.

For example, the second conductive portion32of the flexible circuit board3may be connected to the electrostatic protective layer7through a second conductive adhesive82.