TW201638642A - Backlight module having design of switchable lighting modes and display module utilized thereof - Google Patents

Abstract

A backlight module of the present invention includes a first light source, a second light source, and a control module. Light emitted from the first light source has a first spectrum. The first spectrum has a first blue light peak and a first non-blue light peak. Light emitted from the second light source has a second spectrum. The second spectrum has a second blue light peak and a second non-blue light peak. The intensity value of the first blue light peak is larger than that of the second blue light peak. The control module controls the first light source and the second light source based on setting of a first mode and a second mode. In the first mode, the first light source is activated by the control module and served as a backlight source. In the second mode, the first light source and the second light source are activated alternatively and sequentially by the control module and served as the backlight source.

Description

Backlight module with illumination mode switching design and display module using same

The present invention relates to a backlight module and a display module using the same; in particular, the present invention relates to a backlight module with a light-emitting mode switching design and a display module using the same.

With the advancement of display technology, there are many products that can provide high-quality images. In the case of backlight modules, the way in which fluorescent tubes have been used as backlights has been gradually replaced by light-emitting diodes. The light-emitting diode has the advantages of high luminous efficiency and long service life, and the display with the light-emitting diode as the backlight can reduce the overall volume under the same size, thereby achieving a lightweight effect.

In terms of light emission, a commonly used light-emitting diode backlight module uses a blue light-emitting diode to generate white light by exciting blue-light phosphor powder emitted from a blue light-emitting diode chip. However, the intensity of the blue light emitted by the blue light emitting diode chip is quite high.

In addition, since blue light is a relatively strong visible light, its ability to penetrate the cornea is strong. Most of the energy of blue light after being penetrated into the cornea is absorbed by the retina, causing photochemical damage to the retina. In recent years, studies have been pointed out that long-term exposure to high-energy bands in displays can cause discomfort and even damage to the eyes of users, such as cataracts or macular degeneration. Human eye Prolonged exposure to light in this wavelength range can cause photochemical damage to the retina. It can be seen from the above that in order to reduce the health effects of the light emitted by the backlight module, the existing display still needs to be improved.

An object of the present invention is to provide a backlight module and a display module using the same, which can reduce the damage of blue light to the eyes.

Another object of the present invention is to provide a display module that can improve display color saturation.

The backlight module includes a first light source, a second light source, and a control module. The light produced by the first source has a first emission spectrum. The first emission spectrum has a first blue peak and a first non-blue peak. The light generated by the second light source has a second emission spectrum, wherein the second emission spectrum has a second blue peak and a second non-blue peak, and the intensity peak of the first blue peak is greater than the intensity peak of the second blue peak. The control module controls the first light source and the second light source according to the setting of the first mode and the second mode. In the first mode, the control module controls to illuminate the first light source as a backlight; in the second mode, the control module controls the first light source and the second light source to be alternately illuminated as a backlight.

The display module includes a display panel and a backlight module. The backlight module is disposed on the back side of the display panel and provides a backlight required for the display panel display. The backlight module includes a first light source, a second light source, and a control module. The light produced by the first source has a first emission spectrum. The light produced by the second source has a second emission spectrum that is different from the first emission spectrum. The control module controls the first light source and the second light source to be alternately illuminated in time series as a backlight. The display panel has a penetration spectrum when displayed as a white screen, and the penetration spectrum has a first peak between wavelengths of 430 nm to 480 nm and a second peak between wavelengths of 500 nm to 580 nm. The ratio of the intensity peak of the first peak to the intensity peak of the second peak is between 1.4 and 2.6.

The display module includes a display panel and a backlight module. The display panel contains a red filter, a green filter, and a blue filter. The backlight module is disposed on the back side of the display panel and provides a backlight required for the display panel display. The backlight module includes a first light source, a second light source, and a control module. The light produced by the first source has a first emission spectrum. The light produced by the second source has a second emission spectrum that is different from the first emission spectrum. The control module controls whether the light source passes through the filter according to the settings of the first mode, the second mode, and the third mode. The display panel has a penetration spectrum T(λ) with the wavelength λ as an independent variable when displayed as a white screen, and defines an index function A(λ) with the wavelength λ as an independent variable: A(λ)=T(λ) *B(λ)*CMF(λ), where: B(λ) is a Blue Hazard Function, and CMF(λ) is a human visual brightness matching function. The index function A(λ) has a first index peak between 430 nm and 480 nm and a second index peak between 500 nm and 580 nm. The ratio of the peak of the first index peak to the peak of the second index peak is between 1.78 and 2.37. By switching the illumination mode of the backlight, the intensity of the blue light can be reduced, and the damage of the blue light to the eyes can be avoided.

100‧‧‧ display module

110‧‧‧ display panel

111‧‧‧First substrate

112‧‧‧second substrate

114‧‧‧Color filters

114b‧‧‧Blue filter

114g‧‧‧Green Filter

114r‧‧‧Red Filter

116‧‧‧Liquid layer

130‧‧‧Backlight module

132‧‧‧First light source

134‧‧‧second light source

136‧‧‧Control Module

210‧‧‧First emission spectrum

220‧‧‧second emission spectrum

211‧‧‧The first blue wave peak

221‧‧‧Second blue wave crest

212‧‧‧First non-blue peak

222‧‧‧Second non-blue light peak

213‧‧‧The first red light peak

310‧‧‧The first blue wave peak

320‧‧‧The first green light peak

330‧‧‧The first red light peak

410‧‧‧The first blue wave peak

420‧‧‧Second green light peak

430‧‧‧ first red light peak

510‧‧‧Second blue wave crest

520‧‧‧The first green light peak

530‧‧‧The first red light peak

600,610,620‧‧‧ Curve

601,611,621‧‧‧ first peak

602,612,622‧‧‧second peak

700,710,720‧‧‧ indicator function

701,711,721‧‧‧ first indicator peak

702,712,722‧‧‧second indicator peak

T1‧‧‧ first sub-view period

T2‧‧‧ second sub-view period

1 is a schematic diagram of an embodiment of a backlight module of the present invention; FIG. 2 is a schematic diagram of emission spectrum distribution of a first light source and a second light source; FIG. 3A is a schematic diagram of an embodiment of a display module of the present invention; FIG. FIG. 4A is a schematic diagram of an embodiment of light source illumination in the second mode; FIG. 4B and FIG. 4C are schematic diagrams of light emission during different sub-views in the second mode; FIG. 4D is a view corresponding to FIG. 4A. Schematic diagram of the transmission spectrum; FIG. 5A is a schematic diagram of an embodiment of lighting the light source in the third mode; 5B and FIG. 5C are schematic diagrams of light emission during different sub-views in the third mode; FIG. 5D is a schematic diagram of the penetration spectrum corresponding to FIG. 5A; FIG. 6 is a schematic diagram of the transmission spectrum distribution of the display module of the present invention; Schematic diagram of the blue damage function and the human visual brightness matching function; Fig. 8 is a schematic diagram of the distribution of the index function.

The invention provides a display module with a design of switchable illumination mode. The display module of the present invention is preferably a liquid crystal display. In an embodiment, the light source of the backlight module adopts a white light emitting diode and a cyan LED, and is switched to different display modes by alternately lighting to provide a user with different adjustments according to requirements. Lighting mode.

FIG. 1 is a schematic diagram of an embodiment of a backlight module 130 of the present invention. As shown in FIG. 1 , the backlight module 130 includes a first light source 132 , a second light source 134 , and a control module 136 . The light produced by the first source 132 has a first emission spectrum, and the light produced by the second source 134 has a second emission spectrum. Please refer to the schematic diagram of the emission spectrum distribution of the first light source and the second light source of FIG. As shown in FIG. 2, the first emission spectrum 210 has a first blue peak 211, a first non-blue peak 212, and a first red peak 213. The second emission spectrum 220 has a second blue peak 221 and a second non-blue peak 222. The intensity peak of the first blue peak 211 is greater than the intensity peak of the second blue peak 221 . The first non-blue light peak 212 covers at least the yellow light wavelength interval, and the second non-blue light peak 222 falls within the green light wavelength interval. In addition, the half-height width of the second non-blue light peak 222 is narrower than the half-width of the first non-blue light peak 212. As shown in FIG. 2, the emission spectrum of the second light source has a narrower half-height width in the corresponding green light wavelength interval than the first light source. Referring back to FIG. 1, the control module 136 controls the first light source 132 and the second light source 134 according to the settings of the first mode and the second mode. The control module 136 can control the first light source 132 and/or the first mode according to different mode settings. The two light sources 134 are illuminated. Thereby, the backlight module 130 can generate a backlight into the display panel in the first mode or the second mode, respectively.

FIG. 3A is a schematic diagram of an embodiment of a display module 100 of the present invention. As shown in FIG. 3A , the display module 100 includes a display panel 110 and a backlight module 130 . The display panel 110 includes a first substrate 111 and a second substrate 112. A color filter 114 is disposed on one side of the second substrate 112 toward the first substrate 111, and includes a red color filter 114r, a green color filter 114g, and a blue color filter 114b. A liquid crystal layer 116 is interposed between the first substrate 111 and the second substrate 112. The backlight module 130 is disposed on the back side of the display panel 110 and includes a first light source 132, a second light source 134, and a control module 136. The control module 136 controls whether the light source passes through the filter according to the settings of the first mode, the second mode, and the third mode. In other words, the control module 136 can control all or part of the filters to transmit light according to different mode settings. Thereby, the backlight module 130 can generate a backlight into the display panel in the first mode and the second mode, respectively.

In the first mode, the control module 136 controls the lighting of the first light source 132 as a backlight, and controls the red filter 114r, the green filter 114g, and the blue filter 114b to transmit light. As shown in FIG. 3A, the light passes through the backlight module 130 and is then emitted from the second substrate 112 via the display panel 110. Please refer to FIG. 3B for a schematic diagram of the penetration spectrum in the first mode. In Figure 3B, the different curves represent different color light distributions of the first source. As shown in FIG. 3B, the light passing through the backlight module of the first light source has a first blue peak 310, a first green peak 320, and a first red peak 330. According to the setting of the first mode as the general use mode, the first light source is used as the backlight to achieve full color display, thereby achieving energy saving effect. According to the setting of the first mode, the general use mode is to display the full color only by using the first light source 132 as a backlight, thereby achieving an energy saving effect.

In a preferred embodiment, the first light source 132 has a first blue light wafer, and the light emitted by the first light source 132 is generated by exciting the yellow and red fluorescent powder with the first blue light wafer. The first emission spectrum 210 is as shown in FIG. In the first mode, the first light source 132 is turned on and the filters 114r, 114g, and 114b are both light-transmitted to achieve a penetration spectrum as shown in FIG. 3B.

In the second mode, the control module 136 controls the first light source 132 and the second light source 134 to be alternately illuminated in time series as a backlight. In other words, in the second mode, the control module 136 controls the first light source 132 and the second light source 134 to be sequentially illuminated during the first sub-view period and the second sub-view period, respectively, during the view period. Please refer to Figure 4A. 4A is a schematic view showing an embodiment in which the light source is lit in the second mode. As shown in FIG. 4A, the first light source and the second light source are alternately illuminated during the first sub-view period T1 and the second sub-view period T2, respectively.

In the second mode, the control module 136 controls the first light source 132 and the second light source 134 to be respectively illuminated during the first sub-view period and the second sub-view period in the view period, and controls the red filter. The light sheet 114r and the blue color filter 114b are light transmissive during the first sub-frame, and the green filter 114g is light transmissive during the second sub-frame. Please refer to FIG. 4B and FIG. 4C for a schematic diagram of light emission during different sub-views in the second mode. As shown in FIG. 4B, during the first sub-view, the light passes through the backlight module 130 and then exits through the display panel 110 at the positions of the corresponding red filter 114r and the blue filter 114b, and the liquid crystal layer is manipulated. The liquid crystal molecules in 116 do not emit light at the position corresponding to the green filter 114g, and this is a non-green photon viewing period. As shown in FIG. 4C, during the second sub-view, the light passes through the backlight module 130 and is emitted through the display panel 110 at the position corresponding to the green filter 114g, and the liquid crystal molecules in the liquid crystal layer 116 are manipulated to make the light The position corresponding to the red filter 114r and the blue filter 114b does not emit light, and this is the green photon viewing period. Since the second light source has a narrow half-height width in the corresponding green light wavelength interval, the transmittance through the green filter is high. By this alternate illumination mode, the display color range can be increased to provide better color performance.

Referring to FIG. 4D, a schematic diagram of the penetration spectrum is shown. As shown in FIG. 4D, the light passing through the backlight module of the first light source has a first blue peak 410 and a first red peak 430, and The light passing through the backlight module of the second light source has a second green light peak 420. It should be noted that the half height and width of the second green light peak 420 is narrower than the half height and width of the first green light peak 320 shown in FIG. 3B. By this design, the second green light peak with a narrow half width and a wide width has higher color purity and can improve the transmittance of the green light band. According to the setting of the foregoing second mode, as the color saturation mode, the green light component in the first light source is replaced by the green light component in the second light source. Thereby, the display color range can be increased to provide better color performance.

In a preferred embodiment, the first light source 132 has a first blue light wafer, and the light emitted by the first light source 132 is generated by exciting the yellow and red phosphors with the first blue light wafer. The second light source 134 has a second blue light wafer, and the light emitted by the second light source 134 is generated by exciting the green fluorescent powder with the second blue light wafer. Thereby, in the second mode, the first light source is illuminated during the first sub-view period T1, the second light source is illuminated during the second sub-view period T2, and the filter is controlled in different sub-views in the above manner. The mode of alternating light transmission is achieved while achieving a penetration spectrum as shown in FIG. 3D.

In addition, a third mode different from the foregoing switching mode may be set to pass the first and second light sources through light of different compositions. Fig. 5A is a schematic view showing different embodiments of light source illumination in the second mode. Similarly, in FIG. 5A, the first light source and the second light source are alternately illuminated during the first sub-view period T1 and the second sub-view period T2, respectively.

In the third mode, the control module 136 controls the first light source 132 and the second light source 134 to be respectively illuminated during the first sub-frame period and the second sub-frame period during the view period, and controls the red filter. The light sheet 114r and the green filter 114g are transparent during the first sub-frame, and the blue filter 114b is transparent during the second sub-frame. Please refer to FIG. 5B and FIG. 5C for a schematic diagram of light emission during different sub-views in the third mode. As shown in FIG. 5B, during the first sub-view, the light passes through the backlight module 130 and then exits through the display panel 110 at the positions of the corresponding red filter 114r and the green filter 114g, and the liquid crystal layer 116 is manipulated. Internal liquid crystal molecules make light in the corresponding blue The position of the filter 114b does not emit light, and this time is a non-blue light sub-frame period. As shown in FIG. 5C, during the second sub-view, the light passes through the backlight module 130 and is emitted through the display panel 110 at the position corresponding to the blue filter 114b, and the liquid crystal molecules in the liquid crystal layer 116 are manipulated to make the light. No light is emitted at the position corresponding to the red filter 114r and the green filter 114g, and this is a blue sub-frame period. Since the second light source 134 has a second blue peak having a small intensity peak, the blue light intensity of the backlight can be reduced. By this alternate illumination method, the damage of the blue light to the eyes can be reduced.

Referring to FIG. 5D, a schematic diagram of the penetration spectrum is shown. As shown in FIG. 5D, the light passing through the backlight module of the first light source has a first green light peak 520 and a first red light peak 530, and the light of the second light source passing through the backlight module has a second blue light peak 510. It is worth noting that the intensity peak of the second blue peak 510 is smaller than the intensity peak of the first blue peak 310 shown in FIG. 3B. By this design, the second blue peak having a smaller intensity peak has a smaller blue light intensity. According to the setting of the third mode, the health mode is to replace the blue light component in the first light source with the blue light component in the second light source. By reducing the blue light intensity of the backlight, the damage of the blue light to the eyes can be reduced. From the measurement results, it is found that the first light source and the second light source adopt a ratio of the first blue peak intensity peak of the emission spectrum to the second blue peak intensity peak value preferably between 0.69 and 1 (ie, the first blue peak 211 in FIG. 2) The ratio of the intensity peak to the intensity peak of the second blue peak 221 is between 0.69 and 1), which provides better protection for the human eye when switching to the healthy mode.

FIG. 6 is a schematic diagram of a transmission spectrum distribution of a display module of the present invention. In FIG. 6, different curves represent the penetration spectrum of the backlight module using different illumination modes when displayed as a white screen. Among them, the curve 600 is the penetration spectrum in the general use mode (ie, illuminating the first light source). Curves 610, 620 are the penetration spectra in healthy mode. Different curves have different ratios of intensity peaks. As shown in Figure 6, the curve (600, 610, 620) has a first peak (601, 611, 621) between wavelengths 430 nm and 480 nm and a second peak (602, 612, 622) between wavelengths 500 nm and 580 nm. As mentioned earlier, it provides a small blue light intensity in healthy mode to reduce the damage of blue light to the eyes. The curve (610, 620) has a first peak (611, 621) having a smaller intensity peak than the first peak 601 of the curve 600 in the normal use mode. It is further found from the measurement results that, in the preferred embodiment, the ratio of the intensity peak of the first peak to the intensity peak of the second peak is between 1.4 and 2.6 without affecting the display effect, thereby providing a better human eye. protection of.

In addition, according to the International Electrotechnical Commission (IEC), the safety standard for photobiosafety, IEC62471, is proposed for the influence of blue light in light sources on the human body. It proposes a blue hazard function closely related to human eye health (Blue Hazard). Function). As shown in Fig. 7, B(λ) is a blue-damage function, and light having a wavelength range between 380 nm and 540 nm has different degrees of stimulation values for the retina. In addition, according to the International Commission on Illumination (CIE), the human eye visual brightness matching function (CMF), which proposes light with a wavelength range between 380 nm and 780 nm, three colors for the retina Stimulus value. As shown in FIG. 7, CMF(λ) is a curve in which the human visual brightness matching function corresponds to the green band portion and the wavelength range is between 430 nm and 680 nm. The Applicant has found that using the blue band function and the green band portion of the human visual brightness matching function as the weighting parameters of the permeation spectrum of the present invention, the display module of the present invention has several features, which are further described below.

Figure 8 is a schematic diagram showing the distribution of the index function. The curves in FIG. 8 represent the index functions of different backlight modules, which are the products of the aforementioned penetration spectrum and the blue damage function and the human visual brightness matching function, thereby highlighting different backlight modules in the wavelength range. A backlight that emits between 380 nm and 540 nm and a wavelength range between 430 nm and 680 nm, which stimulates the retina. In detail, the index function is defined as a function A(λ) with one of the wavelengths λ as an independent variable, having the following relationship: A(λ)=T(λ)*B(λ)*CMF(λ) where T(λ) ) is the penetration spectrum of the display panel when it is displayed as a white screen, and B(λ) is a blue damage function (Blue) Hazard Function), CMF (λ) is a human visual brightness color matching function. In Fig. 8, the curve indicated by the dotted line corresponds to the index function 700 in the normal use mode, and the curve drawn by the solid line corresponds to the index function (710, 720) in the healthy mode. As shown in FIG. 8, the relative stimulation intensity of the backlight module of the present invention in the corresponding blue light band is significantly lower than that of the general use mode.

Further, the index function (710, 720, 730) has two peaks, wherein the index function (710, 720, 730) has a first index peak (701, 711, 721) between wavelengths 430 nm and 480 nm, which corresponds to the blue portion of the backlight. In addition, the index function (710, 720, 730) has a second index peak (702, 712, 722) between wavelengths 500 nm and 580 nm, which corresponds to the green portion of the backlight. As shown in FIG. 8, the peak of the first index peak (711, 721) is about 0.4 to 0.8, which is significantly lower than that of the first index peak 701 of the general usage mode (close to 1), and can be lowered. The stimulation of the visible light of the human eye.

In addition, the backlight module of the present invention has a characteristic that the ratio of the peak value of the first and second index peaks is between 1.78 and 2.37, and the intensity ratio relationship of the index function corresponding to the backlight is adjusted to be within the interval. Take into account the effects of human eye protection and color performance. In addition, the backlight module of the present invention can maintain the existing color performance in addition to reducing the damage of the blue light to the eyes. The results of measuring the color performance are shown in Table 1: It can be seen from the data of Table 1 that the backlight module of the present invention can maintain the existing color performance according to the color gamut standard of NTSC under the white point offset. As for the intensity peak value of the index function A(λ) in the blue light band, the peak intensity of the curve 610 is decreased by 29% and the curve 620 is decreased by 47% with respect to the general use mode. Thereby, the human eye protection is provided without affecting the display effect, thereby reducing the damage of the blue light to the eyes, and at the same time improving the shortcoming of the conventional display module providing only a single illumination mode.

The present invention has been described by the above-described related embodiments, but the above embodiments are merely examples for implementing the present invention. It must be noted that the disclosed embodiments do not limit the scope of the invention. On the contrary, modifications and equivalents of the spirit and scope of the invention are included in the scope of the invention.

130‧‧‧Backlight module

132‧‧‧First light source

134‧‧‧second light source

136‧‧‧Control Module

Claims (20)

A backlight module includes: a first light source, wherein the generated light has a first emission spectrum; wherein the first emission spectrum has a first blue wave peak and a first non-blue light peak; and a second light source Generating light having a second emission spectrum; wherein the second emission spectrum has a second blue peak and a second non-blue peak, the intensity peak of the first blue peak being greater than the intensity peak of the second blue peak; a control module, controlling the first light source and the second light source according to a setting of a first mode and a second mode; wherein, in the first mode, the control module controls lighting the first light source as a backlight; in the second mode, the control module controls the first light source and the second light source to be alternately illuminated in time series as a backlight. The backlight module of claim 1, wherein a ratio of the first blue peak intensity peak to the second blue peak intensity peak is between 0.69 and 1. The backlight module of claim 1, wherein in the second mode, the control module controls the first light source and the second light source to sequentially during a first sub-view period of a view period and A second sub-frame period is illuminated separately. The backlight module of claim 3, wherein the second sub-frame period is a blue sub-view period; the first sub-frame period is a non-blue sub-frame period. The backlight module of claim 3, wherein a half-height width of the second non-blue light peak is narrower than a half-height of the first non-blue light peak; the first non-blue light peak covers at least a yellow wavelength range, The second non-blue light peak system falls within the green light wavelength interval; the second sub-picture period is a green photon view period; the first sub-view period is a non-green photo sub-frame period. The backlight module of claim 1, wherein the first emission spectrum further has a first red light Peak. A display module, comprising: a display panel; and a backlight module according to any one of claims 1 to 6, disposed on the back side of the display panel, and respectively in the first mode or the second mode A backlight is generated to enter the display panel. A display module includes: a display panel; and a backlight module disposed on a back side of the display panel and providing a backlight required for display panel display, the backlight module comprising: a first light source, generated The light has a first emission spectrum; a second light source, the generated light has a second emission spectrum different from the first emission spectrum; and a control module controls the first light source and the second light source according to the timing Alternatingly being illuminated as a backlight; wherein the display panel has a penetration spectrum when displayed as a white screen, the penetration spectrum having a first peak between wavelengths of 430 nm to 480 nm and having a wavelength between 500 nm and 580 nm a second peak; a ratio of an intensity peak of the first peak to an intensity peak of the second peak is between 1.4 and 2.6. The display module of claim 8, wherein the control module controls the first light source and the second light source to sequentially during a first sub-view period and a second sub-view period during a view period They are illuminated separately. The display module of claim 9, wherein the second sub-view period is a blue sub-view period; the first sub-view period is a non-blue sub-frame period. The display module of claim 8, wherein the first emission spectrum has a first blue peak And a first non-blue light peak; the second emission spectrum has a second blue peak and a second non-blue peak, and the intensity peak of the first blue peak is greater than the intensity peak of the second blue peak. The display module of claim 11, wherein the first emission spectrum further has a first red light peak. A display module includes: a display panel including a red filter, a green filter, and a blue filter; and a backlight module disposed on the back side of the display panel and providing a display panel display The backlight module includes: a first light source, the generated light has a first emission spectrum; and a second light source, the generated light has a second emission spectrum different from the first emission spectrum; And a control module, configured to control whether the light sources pass through the filters according to a setting of the first mode, the second mode, and a third mode; wherein the display panel has a wavelength λ when displayed as a white screen Passing the spectrum T(λ) as one of the independent variables, and defining the index function A(λ) with the wavelength λ as an independent variable: A(λ)=T(λ)*B(λ)*CMF(λ) Where: B(λ) is the Blue Hazard Function CMF(λ) is the human visual brightness matching function. The index function A(λ) has a first index peak between 430nm and 480nm, at a wavelength of 500nm. Having a second index peak between 580 nm; the peak of the first index peak and the second finger The ratio between the peak values of the peak from 1.78 to 2.37. The display module of claim 13, wherein the control module controls the first light source and the second light source to sequentially during a first sub-view period and a second sub-view period during a view period They are illuminated separately. The display module of claim 14, wherein the second sub-frame period is a blue sub-view period; the first sub-view period is a non-blue sub-frame period. The display module of claim 13, wherein the first emission spectrum has a first blue peak and a first non-blue peak; the second emission spectrum has a second blue peak and a second non-blue peak. The intensity peak of the first blue peak is greater than the intensity peak of the second blue peak. The display module of claim 16, wherein the first emission spectrum further has a first red light peak. The display module of claim 17, wherein in the first mode, the control module controls to illuminate the first light source as a backlight, and controls the red filter, the green filter, and the blue filter. For light transmission. The display module of claim 17, wherein in the second mode, the control module controls the first light source and the second light source to sequentially select one of the first sub-view periods and one during a view period The second sub-frame period is respectively illuminated, and the control red filter and the blue filter are transparent during the first sub-frame, and the green filter is transparent during the second sub-frame. . The display module of claim 17, wherein in the third mode, the control module controls the first light source and the second light source to sequentially perform a first sub-view period and a time during a view period The second sub-frame period is respectively illuminated, and the control red filter and the green filter are transparent during the first sub-frame, and the blue filter is transparent during the second sub-frame. .